80490531999 has 16 divisors (see below), whose sum is σ = 109513220832. Its totient is φ = 52567202688.

The previous prime is 80490531983. The next prime is 80490532013. The reversal of 80490531999 is 99913509408.

It is not a de Polignac number, because 80490531999 - 2⁴ = 80490531983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80490531599) 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, 283792 + ... + 491445.

It is an arithmetic number, because the mean of its divisors is an integer number (6844576302).

Almost surely, 2^80490531999 is an apocalyptic number.

80490531999 is a deficient number, since it is larger than the sum of its proper divisors (29022688833).

80490531999 is a wasteful number, since it uses less digits than its factorization.

80490531999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775946.

The product of its (nonzero) digits is 3149280, while the sum is 57.

The spelling of 80490531999 in words is "eighty billion, four hundred ninety million, five hundred thirty-one thousand, nine hundred ninety-nine".