56840608386 has 20 divisors (see below), whose sum is σ = 127365067302. Its totient is φ = 18946869408.

The previous prime is 56840608367. The next prime is 56840608387. The reversal of 56840608386 is 68380604865.

56840608386 is a `hidden beast` number, since 568 + 40 + 6 + 0 + 8 + 38 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 49782088161 + 7058520225 = 223119^2 + 84015^2 .

It is a super-4 number, since 4×56840608386⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

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 (56840608387) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 175433815 + ... + 175434138.

Almost surely, 2^56840608386 is an apocalyptic number.

56840608386 is an abundant number, since it is smaller than the sum of its proper divisors (70524458916).

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

56840608386 is a wasteful number, since it uses less digits than its factorization.

56840608386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350867967 (or 350867958 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 56840608386 in words is "fifty-six billion, eight hundred forty million, six hundred eight thousand, three hundred eighty-six".