80899998531 has 32 divisors (see below), whose sum is σ = 124637999616. Its totient is φ = 46130112000.

The previous prime is 80899998523. The next prime is 80899998533. The reversal of 80899998531 is 13589999808.

It is not a de Polignac number, because 80899998531 - 2³ = 80899998523 is a prime.

It is a super-2 number, since 2×80899998531² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80899998533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1693666 + ... + 1740776.

It is an arithmetic number, because the mean of its divisors is an integer number (3894937488).

Almost surely, 2^80899998531 is an apocalyptic number.

80899998531 is a deficient number, since it is larger than the sum of its proper divisors (43738001085).

80899998531 is a wasteful number, since it uses less digits than its factorization.

80899998531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50203.

The product of its (nonzero) digits is 50388480, while the sum is 69.

The spelling of 80899998531 in words is "eighty billion, eight hundred ninety-nine million, nine hundred ninety-eight thousand, five hundred thirty-one".