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16673543055625 = 5423327012
BaseRepresentation
bin1111001010100001110010…
…0111000110100100001001
32012000222022212212011200211
43302220130213012210021
54141134404010240000
655243415301201121
73340423640355421
oct362503447064411
965028285764624
1016673543055625
115349234416185
121a5353ba001a1
1393c401623081
1441900a583481
151ddab541d7ba
hexf2a1c9c6909

16673543055625 has 45 divisors (see below), whose sum is σ = 20954957789689. Its totient is φ = 13262639600000.

The previous prime is 16673543055623. The next prime is 16673543055641. The reversal of 16673543055625 is 52655034537661.

The square root of 16673543055625 is 4083325.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 22 ways, for example, as 16039360176889 + 634182878736 = 4004917^2 + 796356^2 .

It is not a de Polignac number, because 16673543055625 - 21 = 16673543055623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16673543055625.

It is not an unprimeable number, because it can be changed into a prime (16673543055623) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 23785367775 + ... + 23785368475.

Almost surely, 216673543055625 is an apocalyptic number.

16673543055625 is the 4083325-th square number.

16673543055625 is the 2041663-rd centered octagonal number.

It is an amenable number.

16673543055625 is a deficient number, since it is larger than the sum of its proper divisors (4281414734064).

16673543055625 is an frugal number, since it uses more digits than its factorization.

16673543055625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1888 (or 939 counting only the distinct ones).

The product of its (nonzero) digits is 68040000, while the sum is 58.

The spelling of 16673543055625 in words is "sixteen trillion, six hundred seventy-three billion, five hundred forty-three million, fifty-five thousand, six hundred twenty-five".

Divisors: 1 5 25 125 233 625 701 1165 3505 5825 17525 29125 54289 87625 145625 163333 271445 438125 491401 816665 1357225 2457005 4083325 6786125 12285025 20416625 33930625 38056589 61425125 102083125 114496433 190282945 307125625 572482165 951414725 2862410825 4757073625 14312054125 23785368125 26677668889 71560270625 133388344445 666941722225 3334708611125 16673543055625