27657022131 has 16 divisors (see below), whose sum is σ = 41113218720. Its totient is φ = 18375081120.

The previous prime is 27657022069. The next prime is 27657022139. The reversal of 27657022131 is 13122075672.

27657022131 is a `hidden beast` number, since 2 + 76 + 570 + 2 + 2 + 13 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-27657022131 is a prime.

It is a super-2 number, since 2×27657022131² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27657022139) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1740100 + ... + 1755921.

It is an arithmetic number, because the mean of its divisors is an integer number (2569576170).

Almost surely, 2^27657022131 is an apocalyptic number.

27657022131 is a deficient number, since it is larger than the sum of its proper divisors (13456196589).

27657022131 is a wasteful number, since it uses less digits than its factorization.

27657022131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3496323 (or 3496317 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The spelling of 27657022131 in words is "twenty-seven billion, six hundred fifty-seven million, twenty-two thousand, one hundred thirty-one".