56937599573966 has 4 divisors (see below), whose sum is σ = 85406399360952. Its totient is φ = 28468799786982.

The previous prime is 56937599573917. The next prime is 56937599573971. The reversal of 56937599573966 is 66937599573965.

It is a happy number.

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

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, 14234399893490 + ... + 14234399893493.

It is an arithmetic number, because the mean of its divisors is an integer number (21351599840238).

Almost surely, 2^{56937599573966} is an apocalyptic number.

56937599573966 is a deficient number, since it is larger than the sum of its proper divisors (28468799786986).

56937599573966 is a wasteful number, since it uses less digits than its factorization.

56937599573966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28468799786985.

The product of its digits is 78121827000, while the sum is 89.

Subtracting 56937599573966 from its reverse (66937599573965), we obtain a palindrome (9999999999999).

The spelling of 56937599573966 in words is "fifty-six trillion, nine hundred thirty-seven billion, five hundred ninety-nine million, five hundred seventy-three thousand, nine hundred sixty-six".