56135521015758 has 32 divisors (see below), whose sum is σ = 124761822865920. Its totient is φ = 18709407247320.

The previous prime is 56135521015723. The next prime is 56135521015771. The reversal of 56135521015758 is 85751012553165.

56135521015758 is a `hidden beast` number, since 5 + 6 + 1 + 3 + 5 + 52 + 10 + 1 + 575 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67166710 + ... + 67997337.

It is an arithmetic number, because the mean of its divisors is an integer number (3898806964560).

Almost surely, 2^{56135521015758} is an apocalyptic number.

56135521015758 is an abundant number, since it is smaller than the sum of its proper divisors (68626301850162).

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

56135521015758 is a wasteful number, since it uses less digits than its factorization.

56135521015758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135171749 (or 135171743 counting only the distinct ones).

The product of its (nonzero) digits is 6300000, while the sum is 54.

The spelling of 56135521015758 in words is "fifty-six trillion, one hundred thirty-five billion, five hundred twenty-one million, fifteen thousand, seven hundred fifty-eight".