556996131938 has 4 divisors (see below), whose sum is σ = 835494197910. Its totient is φ = 278498065968.

The previous prime is 556996131889. The next prime is 556996131947. The reversal of 556996131938 is 839131699655.

556996131938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 360008400049 + 196987731889 = 600007^2 + 443833^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139249032983 + ... + 139249032986.

Almost surely, 2^556996131938 is an apocalyptic number.

556996131938 is a deficient number, since it is larger than the sum of its proper divisors (278498065972).

556996131938 is a wasteful number, since it uses less digits than its factorization.

556996131938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278498065971.

The product of its digits is 47239200, while the sum is 65.

The spelling of 556996131938 in words is "five hundred fifty-six billion, nine hundred ninety-six million, one hundred thirty-one thousand, nine hundred thirty-eight".