656215225312 has 24 divisors (see below), whose sum is σ = 1303776243000. Its totient is φ = 325097449344.

The previous prime is 656215225307. The next prime is 656215225313. The reversal of 656215225312 is 213522512656.

656215225312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656215225313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94064062 + ... + 94071037.

It is an arithmetic number, because the mean of its divisors is an integer number (54324010125).

Almost surely, 2^656215225312 is an apocalyptic number.

It is an amenable number.

656215225312 is a deficient number, since it is larger than the sum of its proper divisors (647561017688).

656215225312 is a wasteful number, since it uses less digits than its factorization.

656215225312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188135218 (or 188135210 counting only the distinct ones).

The product of its digits is 216000, while the sum is 40.

Adding to 656215225312 its reverse (213522512656), we get a palindrome (869737737968).

The spelling of 656215225312 in words is "six hundred fifty-six billion, two hundred fifteen million, two hundred twenty-five thousand, three hundred twelve".