27957416731 has 2 divisors, whose sum is σ = 27957416732. Its totient is φ = 27957416730.

The previous prime is 27957416723. The next prime is 27957416749. The reversal of 27957416731 is 13761475972.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27957416731 - 2³ = 27957416723 is a prime.

It is a super-2 number, since 2×27957416731² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27957416701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13978708365 + 13978708366.

It is an arithmetic number, because the mean of its divisors is an integer number (13978708366).

Almost surely, 2^27957416731 is an apocalyptic number.

27957416731 is a deficient number, since it is larger than the sum of its proper divisors (1).

27957416731 is an equidigital number, since it uses as much as digits as its factorization.

27957416731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2222640, while the sum is 52.

The spelling of 27957416731 in words is "twenty-seven billion, nine hundred fifty-seven million, four hundred sixteen thousand, seven hundred thirty-one".