80097591961 has 2 divisors, whose sum is σ = 80097591962. Its totient is φ = 80097591960.

The previous prime is 80097591929. The next prime is 80097591989. The reversal of 80097591961 is 16919579008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59027617936 + 21069974025 = 242956^2 + 145155^2 .

It is a cyclic number.

It is not a de Polignac number, because 80097591961 - 2⁵ = 80097591929 is a prime.

It is not a weakly prime, because it can be changed into another prime (80097591061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40048795980 + 40048795981.

It is an arithmetic number, because the mean of its divisors is an integer number (40048795981).

Almost surely, 2^80097591961 is an apocalyptic number.

It is an amenable number.

80097591961 is a deficient number, since it is larger than the sum of its proper divisors (1).

80097591961 is an equidigital number, since it uses as much as digits as its factorization.

80097591961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1224720, while the sum is 55.

The spelling of 80097591961 in words is "eighty billion, ninety-seven million, five hundred ninety-one thousand, nine hundred sixty-one".