656223162232 has 64 divisors (see below), whose sum is σ = 1356177116160. Its totient is φ = 295196496000.

The previous prime is 656223162181. The next prime is 656223162241. The reversal of 656223162232 is 232261322656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21164613 + ... + 21195595.

It is an arithmetic number, because the mean of its divisors is an integer number (21190267440).

Almost surely, 2^656223162232 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 656223162232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (678088558080).

656223162232 is an abundant number, since it is smaller than the sum of its proper divisors (699953953928).

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

656223162232 is a wasteful number, since it uses less digits than its factorization.

656223162232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33484 (or 33480 counting only the distinct ones).

The product of its digits is 311040, while the sum is 40.

Adding to 656223162232 its reverse (232261322656), we get a palindrome (888484484888).

The spelling of 656223162232 in words is "six hundred fifty-six billion, two hundred twenty-three million, one hundred sixty-two thousand, two hundred thirty-two".