656655338934 has 36 divisors (see below), whose sum is σ = 1655039478924. Its totient is φ = 187615810872.

The previous prime is 656655338929. The next prime is 656655338939. The reversal of 656655338934 is 439833556656.

656655338934 is a `hidden beast` number, since 6 + 5 + 6 + 6 + 5 + 533 + 8 + 93 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (656655338929) and next prime (656655338939).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656655338939) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 372252712 + ... + 372254475.

It is an arithmetic number, because the mean of its divisors is an integer number (45973318859).

Almost surely, 2^656655338934 is an apocalyptic number.

656655338934 is an abundant number, since it is smaller than the sum of its proper divisors (998384139990).

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

656655338934 is a wasteful number, since it uses less digits than its factorization.

656655338934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744507209 (or 744507199 counting only the distinct ones).

The product of its digits is 209952000, while the sum is 63.

The spelling of 656655338934 in words is "six hundred fifty-six billion, six hundred fifty-five million, three hundred thirty-eight thousand, nine hundred thirty-four".