80161631497 has 16 divisors (see below), whose sum is σ = 83126210832. Its totient is φ = 77240217600.

The previous prime is 80161631477. The next prime is 80161631509. The reversal of 80161631497 is 79413616108.

It can be written as a sum of positive squares in 8 ways, for example, as 6036668416 + 74124963081 = 77696^2 + 272259^2 .

It is a cyclic number.

It is not a de Polignac number, because 80161631497 - 2⁷ = 80161631369 is a prime.

It is a super-2 number, since 2×80161631497² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80161631437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5432113 + ... + 5446849.

It is an arithmetic number, because the mean of its divisors is an integer number (5195388177).

Almost surely, 2^80161631497 is an apocalyptic number.

It is an amenable number.

80161631497 is a deficient number, since it is larger than the sum of its proper divisors (2964579335).

80161631497 is a wasteful number, since it uses less digits than its factorization.

80161631497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16188.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 80161631497 in words is "eighty billion, one hundred sixty-one million, six hundred thirty-one thousand, four hundred ninety-seven".