656168074433 has 16 divisors (see below), whose sum is σ = 677958240960. Its totient is φ = 634794049536.

The previous prime is 656168074427. The next prime is 656168074451. The reversal of 656168074433 is 334470861656.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-656168074433 is a prime.

It is a super-2 number, since 2×656168074433² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (656168074403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 997841 + ... + 1519217.

It is an arithmetic number, because the mean of its divisors is an integer number (42372390060).

Almost surely, 2^656168074433 is an apocalyptic number.

It is an amenable number.

656168074433 is a deficient number, since it is larger than the sum of its proper divisors (21790166527).

656168074433 is a wasteful number, since it uses less digits than its factorization.

656168074433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521776.

The product of its (nonzero) digits is 8709120, while the sum is 53.

The spelling of 656168074433 in words is "six hundred fifty-six billion, one hundred sixty-eight million, seventy-four thousand, four hundred thirty-three".