27257742631 has 16 divisors (see below), whose sum is σ = 32026800960. Its totient is φ = 22711576320.

The previous prime is 27257742563. The next prime is 27257742649. The reversal of 27257742631 is 13624775272.

It is a cyclic number.

It is not a de Polignac number, because 27257742631 - 2²³ = 27249354023 is a prime.

It is a super-2 number, since 2×27257742631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27257742661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91936 + ... + 250933.

It is an arithmetic number, because the mean of its divisors is an integer number (2001675060).

Almost surely, 2^27257742631 is an apocalyptic number.

27257742631 is a deficient number, since it is larger than the sum of its proper divisors (4769058329).

27257742631 is a wasteful number, since it uses less digits than its factorization.

27257742631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343194.

The product of its digits is 987840, while the sum is 46.

The spelling of 27257742631 in words is "twenty-seven billion, two hundred fifty-seven million, seven hundred forty-two thousand, six hundred thirty-one".