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1616171672105 = 51225332637937
BaseRepresentation
bin10111100001001011010…
…101101010001000101001
312201111121210010112121222
4113201023111222020221
5202434404422001410
63234243051511425
7224523145356104
oct27411325521051
95644553115558
101616171672105
11573461859061
12221284758575
13b95344286a3
145831a38973b
152c0911da955
hex1784b56a229

1616171672105 has 8 divisors (see below), whose sum is σ = 1939422569352. Its totient is φ = 1292926295808.

The previous prime is 1616171672083. The next prime is 1616171672153. The reversal of 1616171672105 is 5012761716161.

It can be written as a sum of positive squares in 4 ways, for example, as 194361066496 + 1421810605609 = 440864^2 + 1192397^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1616171672105 - 224 = 1616154894889 is a prime.

It is a super-2 number, since 2×16161716721052 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 706304 + ... + 1931633.

It is an arithmetic number, because the mean of its divisors is an integer number (242427821169).

Almost surely, 21616171672105 is an apocalyptic number.

It is an amenable number.

1616171672105 is a deficient number, since it is larger than the sum of its proper divisors (323250897247).

1616171672105 is a wasteful number, since it uses less digits than its factorization.

1616171672105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760475.

The product of its (nonzero) digits is 105840, while the sum is 44.

The spelling of 1616171672105 in words is "one trillion, six hundred sixteen billion, one hundred seventy-one million, six hundred seventy-two thousand, one hundred five".

Divisors: 1 5 122533 612665 2637937 13189685 323234334421 1616171672105