56773138775 has 12 divisors (see below), whose sum is σ = 70620779832. Its totient is φ = 45275228640.

The previous prime is 56773138771. The next prime is 56773138777. The reversal of 56773138775 is 57783137765.

It is a happy number.

It is not a de Polignac number, because 56773138775 - 2² = 56773138771 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56773138771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3573977 + ... + 3589826.

It is an arithmetic number, because the mean of its divisors is an integer number (5885064986).

Almost surely, 2^56773138775 is an apocalyptic number.

56773138775 is a deficient number, since it is larger than the sum of its proper divisors (13847641057).

56773138775 is a wasteful number, since it uses less digits than its factorization.

56773138775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7164130 (or 7164125 counting only the distinct ones).

The product of its digits is 25930800, while the sum is 59.

The spelling of 56773138775 in words is "fifty-six billion, seven hundred seventy-three million, one hundred thirty-eight thousand, seven hundred seventy-five".