56978347646 has 8 divisors (see below), whose sum is σ = 93237296184. Its totient is φ = 25899248920.

The previous prime is 56978347597. The next prime is 56978347667. The reversal of 56978347646 is 64674387965.

56978347646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1294962425 + ... + 1294962468.

It is an arithmetic number, because the mean of its divisors is an integer number (11654662023).

Almost surely, 2^56978347646 is an apocalyptic number.

56978347646 is a deficient number, since it is larger than the sum of its proper divisors (36258948538).

56978347646 is a wasteful number, since it uses less digits than its factorization.

56978347646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2589924906.

The product of its digits is 182891520, while the sum is 65.

The spelling of 56978347646 in words is "fifty-six billion, nine hundred seventy-eight million, three hundred forty-seven thousand, six hundred forty-six".