80920781432 has 16 divisors (see below), whose sum is σ = 151731192600. Its totient is φ = 40459130080.

The previous prime is 80920781429. The next prime is 80920781437. The reversal of 80920781432 is 23418702908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80920781437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150707 + ... + 429597.

Almost surely, 2^80920781432 is an apocalyptic number.

It is an amenable number.

80920781432 is a deficient number, since it is larger than the sum of its proper divisors (70810411168).

80920781432 is a wasteful number, since it uses less digits than its factorization.

80920781432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315166 (or 315162 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 80920781432 in words is "eighty billion, nine hundred twenty million, seven hundred eighty-one thousand, four hundred thirty-two".