80940819456 has 528 divisors, whose sum is σ = 286121472000. Its totient is φ = 22365020160.

The previous prime is 80940819439. The next prime is 80940819457. The reversal of 80940819456 is 65491804908.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (80940819457) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53995795 + ... + 53997293.

Almost surely, 2^80940819456 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 80940819456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143060736000).

80940819456 is an abundant number, since it is smaller than the sum of its proper divisors (205180652544).

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

80940819456 is a wasteful number, since it uses less digits than its factorization.

80940819456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572 (or 1542 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 80940819456 in words is "eighty billion, nine hundred forty million, eight hundred nineteen thousand, four hundred fifty-six".