56998517707 has 4 divisors (see below), whose sum is σ = 57685246920. Its totient is φ = 56311788496.

The previous prime is 56998517671. The next prime is 56998517713. The reversal of 56998517707 is 70771589965.

56998517707 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56998517707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56998517717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343364482 + ... + 343364647.

It is an arithmetic number, because the mean of its divisors is an integer number (14421311730).

Almost surely, 2^56998517707 is an apocalyptic number.

56998517707 is a deficient number, since it is larger than the sum of its proper divisors (686729213).

56998517707 is an equidigital number, since it uses as much as digits as its factorization.

56998517707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686729212.

The product of its (nonzero) digits is 33339600, while the sum is 64.

The spelling of 56998517707 in words is "fifty-six billion, nine hundred ninety-eight million, five hundred seventeen thousand, seven hundred seven".