27970798931 has 2 divisors, whose sum is σ = 27970798932. Its totient is φ = 27970798930.

The previous prime is 27970798927. The next prime is 27970798949. The reversal of 27970798931 is 13989707972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27970798931 - 2² = 27970798927 is a prime.

It is a super-2 number, since 2×27970798931² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27970791931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13985399465 + 13985399466.

It is an arithmetic number, because the mean of its divisors is an integer number (13985399466).

Almost surely, 2^27970798931 is an apocalyptic number.

27970798931 is a deficient number, since it is larger than the sum of its proper divisors (1).

27970798931 is an equidigital number, since it uses as much as digits as its factorization.

27970798931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12002256, while the sum is 62.

The spelling of 27970798931 in words is "twenty-seven billion, nine hundred seventy million, seven hundred ninety-eight thousand, nine hundred thirty-one".