80993782080 has 84 divisors (see below), whose sum is σ = 278584872852. Its totient is φ = 21598341120.

The previous prime is 80993782039. The next prime is 80993782087. The reversal of 80993782080 is 8028739908.

It can be written as a sum of positive squares in 2 ways, for example, as 35594104896 + 45399677184 = 188664^2 + 213072^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80993782087) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14058541 + ... + 14064300.

Almost surely, 2^80993782080 is an apocalyptic number.

80993782080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80993782080 is an abundant number, since it is smaller than the sum of its proper divisors (197591090772).

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

80993782080 is a wasteful number, since it uses less digits than its factorization.

80993782080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28122864 (or 28122851 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 80993782080 in words is "eighty billion, nine hundred ninety-three million, seven hundred eighty-two thousand, eighty".