16105556556 has 36 divisors (see below), whose sum is σ = 41114359104. Its totient is φ = 5315364000.

The previous prime is 16105556527. The next prime is 16105556567. The reversal of 16105556556 is 65565550161.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×16105556556² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2211100 + ... + 2218371.

Almost surely, 2^16105556556 is an apocalyptic number.

It is an amenable number.

16105556556 is an abundant number, since it is smaller than the sum of its proper divisors (25008802548).

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

16105556556 is a wasteful number, since it uses less digits than its factorization.

16105556556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4429582 (or 4429577 counting only the distinct ones).

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

The spelling of 16105556556 in words is "sixteen billion, one hundred five million, five hundred fifty-six thousand, five hundred fifty-six".