80971290933940 has 48 divisors (see below), whose sum is σ = 195260912118720. Its totient is φ = 27894416014080.

The previous prime is 80971290933913. The next prime is 80971290933943. The reversal of 80971290933940 is 4933909217908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80971290933943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9685556937 + ... + 9685565296.

It is an arithmetic number, because the mean of its divisors is an integer number (4067935669140).

Almost surely, 2^{80971290933940} is an apocalyptic number.

It is an amenable number.

80971290933940 is an abundant number, since it is smaller than the sum of its proper divisors (114289621184780).

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

80971290933940 is a wasteful number, since it uses less digits than its factorization.

80971290933940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19371122272 (or 19371122270 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 64.

The spelling of 80971290933940 in words is "eighty trillion, nine hundred seventy-one billion, two hundred ninety million, nine hundred thirty-three thousand, nine hundred forty".