80492921772 has 24 divisors (see below), whose sum is σ = 190389652656. Its totient is φ = 26463426048.

The previous prime is 80492921749. The next prime is 80492921777. The reversal of 80492921772 is 27712929408.

It is a super-2 number, since 2×80492921772² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80492921777) 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 7 ways as a sum of consecutive naturals, for example, 45942573 + ... + 45944324.

It is an arithmetic number, because the mean of its divisors is an integer number (7932902194).

Almost surely, 2^80492921772 is an apocalyptic number.

It is an amenable number.

80492921772 is an abundant number, since it is smaller than the sum of its proper divisors (109896730884).

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

80492921772 is a wasteful number, since it uses less digits than its factorization.

80492921772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91886977 (or 91886975 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 80492921772 in words is "eighty billion, four hundred ninety-two million, nine hundred twenty-one thousand, seven hundred seventy-two".