656705522113 has 4 divisors (see below), whose sum is σ = 656776000960. Its totient is φ = 656635043268.

The previous prime is 656705522111. The next prime is 656705522147. The reversal of 656705522113 is 311225507656.

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 a cyclic number.

It is not a de Polignac number, because 656705522113 - 2¹ = 656705522111 is a prime.

It is a super-3 number, since 3×656705522113³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 656705522113.

It is not an unprimeable number, because it can be changed into a prime (656705522111) 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, 35225445 + ... + 35244082.

It is an arithmetic number, because the mean of its divisors is an integer number (164194000240).

Almost surely, 2^656705522113 is an apocalyptic number.

It is an amenable number.

656705522113 is a deficient number, since it is larger than the sum of its proper divisors (70478847).

656705522113 is an equidigital number, since it uses as much as digits as its factorization.

656705522113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70478846.

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 656705522113 in words is "six hundred fifty-six billion, seven hundred five million, five hundred twenty-two thousand, one hundred thirteen".