656342332156442 has 16 divisors (see below), whose sum is σ = 1005432630330600. Its totient is φ = 321271138214400.

The previous prime is 656342332156367. The next prime is 656342332156471. The reversal of 656342332156442 is 244651233243656.

It can be written as a sum of positive squares in 4 ways, for example, as 608362175670001 + 47980156486441 = 24664999^2 + 6926771^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18254023967 + ... + 18254059922.

Almost surely, 2^{656342332156442} is an apocalyptic number.

656342332156442 is a deficient number, since it is larger than the sum of its proper divisors (349090298174158).

656342332156442 is a wasteful number, since it uses less digits than its factorization.

656342332156442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36508084081.

The product of its digits is 74649600, while the sum is 56.

The spelling of 656342332156442 in words is "six hundred fifty-six trillion, three hundred forty-two billion, three hundred thirty-two million, one hundred fifty-six thousand, four hundred forty-two".