56947977406 has 4 divisors (see below), whose sum is σ = 85421966112. Its totient is φ = 28473988702.

The previous prime is 56947977389. The next prime is 56947977409. The reversal of 56947977406 is 60477974965.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56947977409) by changing a digit.

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 as a sum of consecutive naturals, namely, 14236994350 + ... + 14236994353.

It is an arithmetic number, because the mean of its divisors is an integer number (21355491528).

Almost surely, 2^56947977406 is an apocalyptic number.

56947977406 is a deficient number, since it is larger than the sum of its proper divisors (28473988706).

56947977406 is a wasteful number, since it uses less digits than its factorization.

56947977406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28473988705.

The product of its (nonzero) digits is 80015040, while the sum is 64.

The spelling of 56947977406 in words is "fifty-six billion, nine hundred forty-seven million, nine hundred seventy-seven thousand, four hundred six".