39145912056 has 48 divisors (see below), whose sum is σ = 106855008000. Its totient is φ = 12945889152.

The previous prime is 39145912049. The next prime is 39145912079. The reversal of 39145912056 is 65021954193.

39145912056 is a `hidden beast` number, since 3 + 9 + 1 + 4 + 591 + 2 + 0 + 56 = 666.

It is a super-2 number, since 2×39145912056² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2131381 + ... + 2149668.

It is an arithmetic number, because the mean of its divisors is an integer number (2226146000).

Almost surely, 2^39145912056 is an apocalyptic number.

39145912056 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

39145912056 is an abundant number, since it is smaller than the sum of its proper divisors (67709095944).

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

39145912056 is a wasteful number, since it uses less digits than its factorization.

39145912056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4281188 (or 4281181 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The spelling of 39145912056 in words is "thirty-nine billion, one hundred forty-five million, nine hundred twelve thousand, fifty-six".