27975460631 has 2 divisors, whose sum is σ = 27975460632. Its totient is φ = 27975460630.

The previous prime is 27975460577. The next prime is 27975460651. The reversal of 27975460631 is 13606457972.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27975460631 - 2⁶ = 27975460567 is a prime.

It is a super-2 number, since 2×27975460631² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27975460631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27975460651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13987730315 + 13987730316.

It is an arithmetic number, because the mean of its divisors is an integer number (13987730316).

Almost surely, 2^27975460631 is an apocalyptic number.

27975460631 is a deficient number, since it is larger than the sum of its proper divisors (1).

27975460631 is an equidigital number, since it uses as much as digits as its factorization.

27975460631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1905120, while the sum is 50.

The spelling of 27975460631 in words is "twenty-seven billion, nine hundred seventy-five million, four hundred sixty thousand, six hundred thirty-one".