56121316808 has 16 divisors (see below), whose sum is σ = 105230327580. Its totient is φ = 28059896128.

The previous prime is 56121316729. The next prime is 56121316813. The reversal of 56121316808 is 80861312165.

It can be written as a sum of positive squares in 2 ways, for example, as 55178949604 + 942367204 = 234902^2 + 30698^2 .

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, 328466 + ... + 469182.

Almost surely, 2^56121316808 is an apocalyptic number.

It is an amenable number.

56121316808 is a deficient number, since it is larger than the sum of its proper divisors (49109010772).

56121316808 is a wasteful number, since it uses less digits than its factorization.

56121316808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190576 (or 190572 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 56121316808 in words is "fifty-six billion, one hundred twenty-one million, three hundred sixteen thousand, eight hundred eight".