656051534207742 has 64 divisors (see below), whose sum is σ = 1337615857105920. Its totient is φ = 214469719491456.

The previous prime is 656051534207689. The next prime is 656051534207753. The reversal of 656051534207742 is 247702435150656.

It is a super-2 number, since 2×656051534207742² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 224556073 + ... + 227458859.

It is an arithmetic number, because the mean of its divisors is an integer number (20900247767280).

Almost surely, 2^{656051534207742} is an apocalyptic number.

656051534207742 is an abundant number, since it is smaller than the sum of its proper divisors (681564322898178).

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

656051534207742 is a wasteful number, since it uses less digits than its factorization.

656051534207742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906065.

The product of its (nonzero) digits is 42336000, while the sum is 57.

The spelling of 656051534207742 in words is "six hundred fifty-six trillion, fifty-one billion, five hundred thirty-four million, two hundred seven thousand, seven hundred forty-two".