656426302004 has 24 divisors (see below), whose sum is σ = 1253199845856. Its totient is φ = 298370268000.

The previous prime is 656426301989. The next prime is 656426302009. The reversal of 656426302004 is 400203624656.

It is a super-2 number, since 2×656426302004² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656426302009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3436739 + ... + 3622709.

It is an arithmetic number, because the mean of its divisors is an integer number (52216660244).

Almost surely, 2^656426302004 is an apocalyptic number.

It is an amenable number.

656426302004 is a deficient number, since it is larger than the sum of its proper divisors (596773543852).

656426302004 is a wasteful number, since it uses less digits than its factorization.

656426302004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266207 (or 266205 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 656426302004 in words is "six hundred fifty-six billion, four hundred twenty-six million, three hundred two thousand, four".