56605747151555 has 16 divisors (see below), whose sum is σ = 77630881261824. Its totient is φ = 38815298319840.

The previous prime is 56605747151549. The next prime is 56605747151567. The reversal of 56605747151555 is 55515174750665.

It is a happy number.

It is not a de Polignac number, because 56605747151555 - 2²⁸ = 56605478716099 is a prime.

It is a super-2 number, since 2×56605747151555² (a number of 28 digits) contains 22 as substring.

It is a Duffinian 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, 24101840 + ... + 26345970.

It is an arithmetic number, because the mean of its divisors is an integer number (4851930078864).

Almost surely, 2^{56605747151555} is an apocalyptic number.

56605747151555 is a deficient number, since it is larger than the sum of its proper divisors (21025134110269).

56605747151555 is a wasteful number, since it uses less digits than its factorization.

56605747151555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2964826.

The product of its (nonzero) digits is 110250000, while the sum is 62.

The spelling of 56605747151555 in words is "fifty-six trillion, six hundred five billion, seven hundred forty-seven million, one hundred fifty-one thousand, five hundred fifty-five".