16055509856 has 24 divisors (see below), whose sum is σ = 31612107744. Its totient is φ = 8027038080.

The previous prime is 16055509817. The next prime is 16055509861. The reversal of 16055509856 is 65890555061.

It is a super-2 number, since 2×16055509856² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694646 + ... + 717386.

It is an arithmetic number, because the mean of its divisors is an integer number (1317171156).

Almost surely, 2^16055509856 is an apocalyptic number.

16055509856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16055509856 is a deficient number, since it is larger than the sum of its proper divisors (15556597888).

16055509856 is a wasteful number, since it uses less digits than its factorization.

16055509856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44814 (or 44806 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 50.

The spelling of 16055509856 in words is "sixteen billion, fifty-five million, five hundred nine thousand, eight hundred fifty-six".