56171455664 has 40 divisors (see below), whose sum is σ = 112473394992. Its totient is φ = 27158190080.

The previous prime is 56171455661. The next prime is 56171455667. The reversal of 56171455664 is 46655417165.

It is an interprime number because it is at equal distance from previous prime (56171455661) and next prime (56171455667).

It is not an unprimeable number, because it can be changed into a prime (56171455661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304754 + ... + 453009.

Almost surely, 2^56171455664 is an apocalyptic number.

It is an amenable number.

56171455664 is an abundant number, since it is smaller than the sum of its proper divisors (56301939328).

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

56171455664 is a wasteful number, since it uses less digits than its factorization.

56171455664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757925 (or 757919 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 50.

The spelling of 56171455664 in words is "fifty-six billion, one hundred seventy-one million, four hundred fifty-five thousand, six hundred sixty-four".