16155565560 has 64 divisors (see below), whose sum is σ = 53851888800. Its totient is φ = 4308150528.

The previous prime is 16155565549. The next prime is 16155565571. The reversal of 16155565560 is 6556555161.

16155565560 is a `hidden beast` number, since 16 + 15 + 5 + 5 + 65 + 560 = 666.

It is an interprime number because it is at equal distance from previous prime (16155565549) and next prime (16155565571).

It is a super-2 number, since 2×16155565560² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7478349 + ... + 7480508.

Almost surely, 2^16155565560 is an apocalyptic number.

16155565560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16155565560 is an abundant number, since it is smaller than the sum of its proper divisors (37696323240).

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

16155565560 is a wasteful number, since it uses less digits than its factorization.

16155565560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14958877 (or 14958867 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 45.

The spelling of 16155565560 in words is "sixteen billion, one hundred fifty-five million, five hundred sixty-five thousand, five hundred sixty".