16164392868 has 216 divisors, whose sum is σ = 45988260864. Its totient is φ = 4758445440.

The previous prime is 16164392857. The next prime is 16164392963. The reversal of 16164392868 is 86829346161.

16164392868 is a `hidden beast` number, since 16 + 164 + 392 + 86 + 8 = 666.

It is a super-2 number, since 2×16164392868² (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 71 ways as a sum of consecutive naturals, for example, 57117855 + ... + 57118137.

Almost surely, 2^16164392868 is an apocalyptic number.

16164392868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16164392868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22994130432).

16164392868 is an abundant number, since it is smaller than the sum of its proper divisors (29823867996).

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

16164392868 is a wasteful number, since it uses less digits than its factorization.

16164392868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 459 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The spelling of 16164392868 in words is "sixteen billion, one hundred sixty-four million, three hundred ninety-two thousand, eight hundred sixty-eight".