80996557824 has 1056 divisors, whose sum is σ = 308772755200. Its totient is φ = 21069103104.

The previous prime is 80996557801. The next prime is 80996557843. The reversal of 80996557824 is 42875569908.

It is a super-2 number, since 2×80996557824² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1109541852 + ... + 1109541924.

Almost surely, 2^80996557824 is an apocalyptic number.

80996557824 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80996557824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154386377600).

80996557824 is an abundant number, since it is smaller than the sum of its proper divisors (227776197376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80996557824 is an equidigital number, since it uses as much as digits as its factorization.

80996557824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 63.

The spelling of 80996557824 in words is "eighty billion, nine hundred ninety-six million, five hundred fifty-seven thousand, eight hundred twenty-four".