656212545092 has 36 divisors (see below), whose sum is σ = 1244044400256. Its totient is φ = 302735553120.

The previous prime is 656212545091. The next prime is 656212545139. The reversal of 656212545092 is 290545212656.

It is a super-2 number, since 2×656212545092² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (656212545091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1352213 + ... + 1772259.

It is an arithmetic number, because the mean of its divisors is an integer number (34556788896).

Almost surely, 2^656212545092 is an apocalyptic number.

It is an amenable number.

656212545092 is a deficient number, since it is larger than the sum of its proper divisors (587831855164).

656212545092 is a wasteful number, since it uses less digits than its factorization.

656212545092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422388 (or 422373 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 47.

The spelling of 656212545092 in words is "six hundred fifty-six billion, two hundred twelve million, five hundred forty-five thousand, ninety-two".