42631506165056 has 28 divisors (see below), whose sum is σ = 89573182992468. Its totient is φ = 20061885253632.

The previous prime is 42631506165043. The next prime is 42631506165097. The reversal of 42631506165056 is 65056160513624.

It can be written as a sum of positive squares in 2 ways, for example, as 20284935054400 + 22346571110656 = 4503880^2 + 4727216^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42631506164995 and 42631506165013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19591683731 + ... + 19591685906.

It is an arithmetic number, because the mean of its divisors is an integer number (3199042249731).

Almost surely, 2^{42631506165056} is an apocalyptic number.

It is an amenable number.

42631506165056 is an abundant number, since it is smaller than the sum of its proper divisors (46941676827412).

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

42631506165056 is a wasteful number, since it uses less digits than its factorization.

42631506165056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39183369666 (or 39183369656 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 50.

The spelling of 42631506165056 in words is "forty-two trillion, six hundred thirty-one billion, five hundred six million, one hundred sixty-five thousand, fifty-six".