56673578216 has 16 divisors (see below), whose sum is σ = 106288583940. Its totient is φ = 28329955840.

The previous prime is 56673578197. The next prime is 56673578231. The reversal of 56673578216 is 61287537665.

It can be written as a sum of positive squares in 2 ways, for example, as 52374153316 + 4299424900 = 228854^2 + 65570^2 .

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, 818825 + ... + 885336.

Almost surely, 2^56673578216 is an apocalyptic number.

It is an amenable number.

56673578216 is a deficient number, since it is larger than the sum of its proper divisors (49615005724).

56673578216 is a wasteful number, since it uses less digits than its factorization.

56673578216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708324 (or 1708320 counting only the distinct ones).

The product of its digits is 12700800, while the sum is 56.

The spelling of 56673578216 in words is "fifty-six billion, six hundred seventy-three million, five hundred seventy-eight thousand, two hundred sixteen".