56861122648 has 16 divisors (see below), whose sum is σ = 116306841960. Its totient is φ = 25845964800.

The previous prime is 56861122631. The next prime is 56861122709. The reversal of 56861122648 is 84622116865.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 323074473 + ... + 323074648.

Almost surely, 2^56861122648 is an apocalyptic number.

It is an amenable number.

56861122648 is an abundant number, since it is smaller than the sum of its proper divisors (59445719312).

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

56861122648 is a wasteful number, since it uses less digits than its factorization.

56861122648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646149138 (or 646149134 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 49.

The spelling of 56861122648 in words is "fifty-six billion, eight hundred sixty-one million, one hundred twenty-two thousand, six hundred forty-eight".