656425524656 has 120 divisors (see below), whose sum is σ = 1474748943360. Its totient is φ = 282053439360.

The previous prime is 656425524641. The next prime is 656425524731.

656425524656 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17011721 + ... + 17050263.

It is an arithmetic number, because the mean of its divisors is an integer number (12289574528).

Almost surely, 2^656425524656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 656425524656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (737374471680).

656425524656 is an abundant number, since it is smaller than the sum of its proper divisors (818323418704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

656425524656 is a wasteful number, since it uses less digits than its factorization.

656425524656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39055 (or 39038 counting only the distinct ones).

The product of its digits is 51840000, while the sum is 56.

The spelling of 656425524656 in words is "six hundred fifty-six billion, four hundred twenty-five million, five hundred twenty-four thousand, six hundred fifty-six".