56651275678 has 4 divisors (see below), whose sum is σ = 84976913520. Its totient is φ = 28325637838.

The previous prime is 56651275669. The next prime is 56651275739. The reversal of 56651275678 is 87657215665.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14162818918 + ... + 14162818921.

It is an arithmetic number, because the mean of its divisors is an integer number (21244228380).

Almost surely, 2^56651275678 is an apocalyptic number.

56651275678 is a deficient number, since it is larger than the sum of its proper divisors (28325637842).

56651275678 is a wasteful number, since it uses less digits than its factorization.

56651275678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28325637841.

The product of its digits is 21168000, while the sum is 58.

The spelling of 56651275678 in words is "fifty-six billion, six hundred fifty-one million, two hundred seventy-five thousand, six hundred seventy-eight".