56815120053 has 12 divisors (see below), whose sum is σ = 85634384160. Its totient is φ = 36229931496.

The previous prime is 56815120051. The next prime is 56815120057. The reversal of 56815120053 is 35002151865.

It is a happy number.

It is not a de Polignac number, because 56815120053 - 2¹ = 56815120051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56815120051) 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, 137234383 + ... + 137234796.

It is an arithmetic number, because the mean of its divisors is an integer number (7136198680).

Almost surely, 2^56815120053 is an apocalyptic number.

It is an amenable number.

56815120053 is a deficient number, since it is larger than the sum of its proper divisors (28819264107).

56815120053 is a wasteful number, since it uses less digits than its factorization.

56815120053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274469208 (or 274469205 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The spelling of 56815120053 in words is "fifty-six billion, eight hundred fifteen million, one hundred twenty thousand, fifty-three".