656112115501 has 4 divisors (see below), whose sum is σ = 664017080832. Its totient is φ = 648207150172.

The previous prime is 656112115471. The next prime is 656112115531. The reversal of 656112115501 is 105511211656.

656112115501 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (656112115471) and next prime (656112115531).

It is a cyclic number.

It is not a de Polignac number, because 656112115501 - 2⁹ = 656112114989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656112115531) 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, 3952482541 + ... + 3952482706.

It is an arithmetic number, because the mean of its divisors is an integer number (166004270208).

Almost surely, 2^656112115501 is an apocalyptic number.

It is an amenable number.

656112115501 is a deficient number, since it is larger than the sum of its proper divisors (7904965331).

656112115501 is an equidigital number, since it uses as much as digits as its factorization.

656112115501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7904965330.

The product of its (nonzero) digits is 9000, while the sum is 34.

The spelling of 656112115501 in words is "six hundred fifty-six billion, one hundred twelve million, one hundred fifteen thousand, five hundred one".