80991254148 has 96 divisors (see below), whose sum is σ = 225478342656. Its totient is φ = 22123318272.

The previous prime is 80991254137. The next prime is 80991254189. The reversal of 80991254148 is 84145219908.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 80991254148.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4382215 + ... + 4400657.

It is an arithmetic number, because the mean of its divisors is an integer number (2348732736).

Almost surely, 2^80991254148 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80991254148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112739171328).

80991254148 is an abundant number, since it is smaller than the sum of its proper divisors (144487088508).

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

80991254148 is a wasteful number, since it uses less digits than its factorization.

80991254148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20753 (or 20751 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 51.

The spelling of 80991254148 in words is "eighty billion, nine hundred ninety-one million, two hundred fifty-four thousand, one hundred forty-eight".