16156656100 has 36 divisors (see below), whose sum is σ = 37756865524. Its totient is φ = 5965534080.

The previous prime is 16156656091. The next prime is 16156656119. The reversal of 16156656100 is 165665161.

It can be written as a sum of positive squares in 6 ways, for example, as 39337984 + 16117318116 = 6272^2 + 126954^2 .

It is a super-2 number, since 2×16156656100² (a number of 21 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 16156656100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6212799 + ... + 6215398.

Almost surely, 2^16156656100 is an apocalyptic number.

16156656100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16156656100 is an abundant number, since it is smaller than the sum of its proper divisors (21600209424).

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

16156656100 is a wasteful number, since it uses less digits than its factorization.

16156656100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12428224 (or 12428217 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 16156656100 in words is "sixteen billion, one hundred fifty-six million, six hundred fifty-six thousand, one hundred".