56171021842 has 32 divisors (see below), whose sum is σ = 91054857600. Its totient is φ = 25834647168.

The previous prime is 56171021807. The next prime is 56171021909. The reversal of 56171021842 is 24812017165.

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, 12297043 + ... + 12301609.

It is an arithmetic number, because the mean of its divisors is an integer number (2845464300).

Almost surely, 2^56171021842 is an apocalyptic number.

56171021842 is a deficient number, since it is larger than the sum of its proper divisors (34883835758).

56171021842 is a wasteful number, since it uses less digits than its factorization.

56171021842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6130.

The product of its (nonzero) digits is 26880, while the sum is 37.

The spelling of 56171021842 in words is "fifty-six billion, one hundred seventy-one million, twenty-one thousand, eight hundred forty-two".