42888635865256 has 8 divisors (see below), whose sum is σ = 80416192247370. Its totient is φ = 21444317932624.

The previous prime is 42888635865203. The next prime is 42888635865263. The reversal of 42888635865256 is 65256853688824.

It can be written as a sum of positive squares in only one way, i.e., 29438329004100 + 13450306861156 = 5425710^2 + 3667466^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2680539741571 + ... + 2680539741586.

Almost surely, 2^{42888635865256} is an apocalyptic number.

It is an amenable number.

42888635865256 is a deficient number, since it is larger than the sum of its proper divisors (37527556382114).

42888635865256 is a wasteful number, since it uses less digits than its factorization.

42888635865256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5361079483163 (or 5361079483159 counting only the distinct ones).

The product of its digits is 5308416000, while the sum is 76.

The spelling of 42888635865256 in words is "forty-two trillion, eight hundred eighty-eight billion, six hundred thirty-five million, eight hundred sixty-five thousand, two hundred fifty-six".