8168072971 has 2 divisors, whose sum is σ = 8168072972. Its totient is φ = 8168072970.

The previous prime is 8168072897. The next prime is 8168072993. The reversal of 8168072971 is 1792708618.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8168072971 - 2²⁷ = 8033855243 is a prime.

It is not a weakly prime, because it can be changed into another prime (8168072071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4084036485 + 4084036486.

It is an arithmetic number, because the mean of its divisors is an integer number (4084036486).

Almost surely, 2^8168072971 is an apocalyptic number.

8168072971 is a deficient number, since it is larger than the sum of its proper divisors (1).

8168072971 is an equidigital number, since it uses as much as digits as its factorization.

8168072971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 49.

The square root of 8168072971 is about 90377.3919240869. The cubic root of 8168072971 is about 2013.9091247977.

The spelling of 8168072971 in words is "eight billion, one hundred sixty-eight million, seventy-two thousand, nine hundred seventy-one".