15656116106550 has 96 divisors (see below), whose sum is σ = 39878260342272. Its totient is φ = 4061953284480.

The previous prime is 15656116106489. The next prime is 15656116106567. The reversal of 15656116106550 is 5560161165651.

It is a super-2 number, since 2×15656116106550² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15656116106550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 175152169 + ... + 175241531.

It is an arithmetic number, because the mean of its divisors is an integer number (415398545232).

Almost surely, 2^{15656116106550} is an apocalyptic number.

15656116106550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15656116106550 is an abundant number, since it is smaller than the sum of its proper divisors (24222144235722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15656116106550 is a wasteful number, since it uses less digits than its factorization.

15656116106550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120982 (or 120977 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 48.

The spelling of 15656116106550 in words is "fifteen trillion, six hundred fifty-six billion, one hundred sixteen million, one hundred six thousand, five hundred fifty".