656963109373 has 12 divisors (see below), whose sum is σ = 686864840508. Its totient is φ = 628311453440.

The previous prime is 656963109343. The next prime is 656963109391. The reversal of 656963109373 is 373901369656.

It can be written as a sum of positive squares in 2 ways, for example, as 238337287204 + 418625822169 = 488198^2 + 647013^2 .

It is not a de Polignac number, because 656963109373 - 2³³ = 648373174781 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 (656963109343) 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, 3861483 + ... + 4028023.

It is an arithmetic number, because the mean of its divisors is an integer number (57238736709).

Almost surely, 2^656963109373 is an apocalyptic number.

It is an amenable number.

656963109373 is a deficient number, since it is larger than the sum of its proper divisors (29901731135).

656963109373 is a wasteful number, since it uses less digits than its factorization.

656963109373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174044 (or 174021 counting only the distinct ones).

The product of its (nonzero) digits is 16533720, while the sum is 58.

The spelling of 656963109373 in words is "six hundred fifty-six billion, nine hundred sixty-three million, one hundred nine thousand, three hundred seventy-three".