16166253216 has 24 divisors (see below), whose sum is σ = 42436414944. Its totient is φ = 5388751040.

The previous prime is 16166253193. The next prime is 16166253221. The reversal of 16166253216 is 61235266161.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×16166253216² (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 3 ways as a sum of consecutive naturals, for example, 84199140 + ... + 84199331.

It is an arithmetic number, because the mean of its divisors is an integer number (1768183956).

Almost surely, 2^16166253216 is an apocalyptic number.

16166253216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16166253216 is an abundant number, since it is smaller than the sum of its proper divisors (26270161728).

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

16166253216 is a wasteful number, since it uses less digits than its factorization.

16166253216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168398484 (or 168398476 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The spelling of 16166253216 in words is "sixteen billion, one hundred sixty-six million, two hundred fifty-three thousand, two hundred sixteen".