56105138457556 has 12 divisors (see below), whose sum is σ = 98933488426080. Its totient is φ = 27838427478680.

The previous prime is 56105138457527. The next prime is 56105138457607. The reversal of 56105138457556 is 65575483150165.

It is a super-2 number, since 2×56105138457556² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56105138457494 and 56105138457503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53535436936 + ... + 53535437983.

It is an arithmetic number, because the mean of its divisors is an integer number (8244457368840).

Almost surely, 2^{56105138457556} is an apocalyptic number.

It is an amenable number.

56105138457556 is a deficient number, since it is larger than the sum of its proper divisors (42828349968524).

56105138457556 is a wasteful number, since it uses less digits than its factorization.

56105138457556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107070875054 (or 107070875052 counting only the distinct ones).

The product of its (nonzero) digits is 75600000, while the sum is 61.

The spelling of 56105138457556 in words is "fifty-six trillion, one hundred five billion, one hundred thirty-eight million, four hundred fifty-seven thousand, five hundred fifty-six".