656215243432 has 64 divisors (see below), whose sum is σ = 1439607744000. Its totient is φ = 274577942016.

The previous prime is 656215243421. The next prime is 656215243433. The reversal of 656215243432 is 234342512656.

It is not an unprimeable number, because it can be changed into a prime (656215243433) 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, 771694 + ... + 1381282.

It is an arithmetic number, because the mean of its divisors is an integer number (22493871000).

Almost surely, 2^656215243432 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 656215243432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (719803872000).

656215243432 is an abundant number, since it is smaller than the sum of its proper divisors (783392500568).

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

656215243432 is a wasteful number, since it uses less digits than its factorization.

656215243432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610058 (or 610054 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 43.

The spelling of 656215243432 in words is "six hundred fifty-six billion, two hundred fifteen million, two hundred forty-three thousand, four hundred thirty-two".