8165105236512 has 480 divisors, whose sum is σ = 27877599332352. Its totient is φ = 2296075009536.

The previous prime is 8165105236501. The next prime is 8165105236543. The reversal of 8165105236512 is 2156325015618.

8165105236512 is a `hidden beast` number, since 8 + 1 + 6 + 5 + 105 + 23 + 6 + 512 = 666.

It is a super-2 number, since 2×8165105236512² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1924368663 + ... + 1924372905.

Almost surely, 2^{8165105236512} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8165105236512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13938799666176).

8165105236512 is an abundant number, since it is smaller than the sum of its proper divisors (19712494095840).

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

8165105236512 is a wasteful number, since it uses less digits than its factorization.

8165105236512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5922 (or 5905 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 8165105236512 in words is "eight trillion, one hundred sixty-five billion, one hundred five million, two hundred thirty-six thousand, five hundred twelve".