56158835687838 has 48 divisors (see below), whose sum is σ = 138745358768016. Its totient is φ = 16263192234240.

The previous prime is 56158835687831. The next prime is 56158835687863. The reversal of 56158835687838 is 83878653885165.

56158835687838 is a `hidden beast` number, since 5 + 6 + 15 + 8 + 8 + 3 + 568 + 7 + 8 + 38 = 666.

It is a super-2 number, since 2×56158835687838² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56158835687831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7058673208 + ... + 7058681163.

It is an arithmetic number, because the mean of its divisors is an integer number (2890528307667).

Almost surely, 2^{56158835687838} is an apocalyptic number.

56158835687838 is an abundant number, since it is smaller than the sum of its proper divisors (82586523080178).

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

56158835687838 is a wasteful number, since it uses less digits than its factorization.

56158835687838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14117354409 (or 14117354406 counting only the distinct ones).

The product of its digits is 9289728000, while the sum is 81.

The spelling of 56158835687838 in words is "fifty-six trillion, one hundred fifty-eight billion, eight hundred thirty-five million, six hundred eighty-seven thousand, eight hundred thirty-eight".