56556723642 has 16 divisors (see below), whose sum is σ = 113223172032. Its totient is φ = 18833953760.

The previous prime is 56556723637. The next prime is 56556723653. The reversal of 56556723642 is 24632765565.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4565163 + ... + 4577534.

It is an arithmetic number, because the mean of its divisors is an integer number (7076448252).

Almost surely, 2^56556723642 is an apocalyptic number.

56556723642 is an abundant number, since it is smaller than the sum of its proper divisors (56666448390).

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

56556723642 is a wasteful number, since it uses less digits than its factorization.

56556723642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9143733.

The product of its digits is 9072000, while the sum is 51.

The spelling of 56556723642 in words is "fifty-six billion, five hundred fifty-six million, seven hundred twenty-three thousand, six hundred forty-two".