16165172436966 has 576 divisors, whose sum is σ = 45413870261760. Its totient is φ = 4209705561600.

The previous prime is 16165172436929. The next prime is 16165172436967. The reversal of 16165172436966 is 66963427156161.

It is a happy number.

16165172436966 is a `hidden beast` number, since 1 + 6 + 1 + 6 + 517 + 24 + 3 + 6 + 96 + 6 = 666.

It is a super-2 number, since 2×16165172436966² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16165172436967) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 12237071586 + ... + 12237072906.

It is an arithmetic number, because the mean of its divisors is an integer number (78843524760).

Almost surely, 2^{16165172436966} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16165172436966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22706935130880).

16165172436966 is an abundant number, since it is smaller than the sum of its proper divisors (29248697824794).

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

16165172436966 is a wasteful number, since it uses less digits than its factorization.

16165172436966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623 (or 1580 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 63.

The spelling of 16165172436966 in words is "sixteen trillion, one hundred sixty-five billion, one hundred seventy-two million, four hundred thirty-six thousand, nine hundred sixty-six".