15616105155555 has 64 divisors (see below), whose sum is σ = 27855011773440. Its totient is φ = 7424218238976.

The previous prime is 15616105155551. The next prime is 15616105155577. The reversal of 15616105155555 is 55555150161651.

It is not a de Polignac number, because 15616105155555 - 2² = 15616105155551 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 15616105155498 and 15616105155507.

It is not an unprimeable number, because it can be changed into a prime (15616105155551) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18695119 + ... + 19512551.

It is an arithmetic number, because the mean of its divisors is an integer number (435234558960).

Almost surely, 2^{15616105155555} is an apocalyptic number.

15616105155555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15616105155555 is a deficient number, since it is larger than the sum of its proper divisors (12238906617885).

15616105155555 is a wasteful number, since it uses less digits than its factorization.

15616105155555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821420.

The product of its (nonzero) digits is 2812500, while the sum is 51.

The spelling of 15616105155555 in words is "fifteen trillion, six hundred sixteen billion, one hundred five million, one hundred fifty-five thousand, five hundred fifty-five".