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16545411454561 = 112136738937641
BaseRepresentation
bin1111000011000100011101…
…0111110101011001100001
32011120201121011122102120121
43300301013113311121201
54132040000313021221
655104505044240241
73325236501623323
oct360610727653141
964521534572517
1016545411454561
1152a9962478900
121a327409a0081
139302c1869452
14412b332b7613
151da5b6624a41
hexf0c475f5661

16545411454561 has 6 divisors (see below), whose sum is σ = 18186278706386. Its totient is φ = 15041283140400.

The previous prime is 16545411454547. The next prime is 16545411454589.

16545411454561 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 13652286010000 + 2893125444561 = 3694900^2 + 1700919^2 .

It is a de Polignac number, because none of the positive numbers 2k-16545411454561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16545411454499 and 16545411454508.

It is not an unprimeable number, because it can be changed into a prime (16545411454511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68369468700 + ... + 68369468941.

Almost surely, 216545411454561 is an apocalyptic number.

16545411454561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16545411454561 is a deficient number, since it is larger than the sum of its proper divisors (1640867251825).

16545411454561 is a wasteful number, since it uses less digits than its factorization.

16545411454561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136738937663 (or 136738937652 counting only the distinct ones).

The product of its digits is 5760000, while the sum is 52.

The spelling of 16545411454561 in words is "sixteen trillion, five hundred forty-five billion, four hundred eleven million, four hundred fifty-four thousand, five hundred sixty-one".

Divisors: 1 11 121 136738937641 1504128314051 16545411454561