56801320257 has 32 divisors (see below), whose sum is σ = 83013972480. Its totient is φ = 34261240320.

The previous prime is 56801320253. The next prime is 56801320259. The reversal of 56801320257 is 75202310865.

It is not a de Polignac number, because 56801320257 - 2² = 56801320253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56801320253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8672658 + ... + 8679204.

It is an arithmetic number, because the mean of its divisors is an integer number (2594186640).

Almost surely, 2^56801320257 is an apocalyptic number.

It is an amenable number.

56801320257 is a deficient number, since it is larger than the sum of its proper divisors (26212652223).

56801320257 is a wasteful number, since it uses less digits than its factorization.

56801320257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7773.

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 56801320257 in words is "fifty-six billion, eight hundred one million, three hundred twenty thousand, two hundred fifty-seven".