656234652601 has 6 divisors (see below), whose sum is σ = 721315775306. Its totient is φ = 596576956800.

The previous prime is 656234652587. The next prime is 656234652673. The reversal of 656234652601 is 106256432656.

It can be written as a sum of positive squares in only one way, i.e., 432339125625 + 223895526976 = 657525^2 + 473176^2 .

It is not a de Polignac number, because 656234652601 - 2⁷ = 656234652473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (656234652301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2711713320 + ... + 2711713561.

Almost surely, 2^656234652601 is an apocalyptic number.

It is an amenable number.

656234652601 is a deficient number, since it is larger than the sum of its proper divisors (65081122705).

656234652601 is a wasteful number, since it uses less digits than its factorization.

656234652601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5423426903 (or 5423426892 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 656234652601 in words is "six hundred fifty-six billion, two hundred thirty-four million, six hundred fifty-two thousand, six hundred one".