80977799448 has 576 divisors, whose sum is σ = 287380548000. Its totient is φ = 20391727104.

The previous prime is 80977799443. The next prime is 80977799503. The reversal of 80977799448 is 84499777908.

80977799448 is a `hidden beast` number, since 8 + 0 + 97 + 7 + 7 + 99 + 448 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80977799443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 142315708 + ... + 142316276.

Almost surely, 2^80977799448 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 80977799448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143690274000).

80977799448 is an abundant number, since it is smaller than the sum of its proper divisors (206402748552).

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

80977799448 is a wasteful number, since it uses less digits than its factorization.

80977799448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 256048128, while the sum is 72.

The spelling of 80977799448 in words is "eighty billion, nine hundred seventy-seven million, seven hundred ninety-nine thousand, four hundred forty-eight".