16165685376 has 128 divisors (see below), whose sum is σ = 47755502400. Its totient is φ = 5383563264.

The previous prime is 16165685357. The next prime is 16165685377. The reversal of 16165685376 is 67358656161.

16165685376 is a `hidden beast` number, since 1 + 6 + 1 + 6 + 568 + 5 + 3 + 76 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×16165685376² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (16165685377) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6886635 + ... + 6888981.

Almost surely, 2^16165685376 is an apocalyptic number.

16165685376 is a gapful number since it is divisible by the number (16) 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 16165685376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23877751200).

16165685376 is an abundant number, since it is smaller than the sum of its proper divisors (31589817024).

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

16165685376 is a wasteful number, since it uses less digits than its factorization.

16165685376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4363 (or 4345 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 16165685376 in words is "sixteen billion, one hundred sixty-five million, six hundred eighty-five thousand, three hundred seventy-six".