55636762138 has 16 divisors (see below), whose sum is σ = 90752494824. Its totient is φ = 25474383360.

The previous prime is 55636762079. The next prime is 55636762163. The reversal of 55636762138 is 83126763655.

It can be written as a sum of positive squares in 4 ways, for example, as 55359972369 + 276789769 = 235287^2 + 16637^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22111923 + ... + 22114438.

Almost surely, 2^55636762138 is an apocalyptic number.

55636762138 is a deficient number, since it is larger than the sum of its proper divisors (35115732686).

55636762138 is a wasteful number, since it uses less digits than its factorization.

55636762138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44226417.

The product of its digits is 5443200, while the sum is 52.

The spelling of 55636762138 in words is "fifty-five billion, six hundred thirty-six million, seven hundred sixty-two thousand, one hundred thirty-eight".