8009981079021 has 12 divisors (see below), whose sum is σ = 11574662597472. Its totient is φ = 5337822803976.

The previous prime is 8009981078951. The next prime is 8009981079059. The reversal of 8009981079021 is 1209701899008.

It is not a de Polignac number, because 8009981079021 - 2⁷ = 8009981078893 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8009981071021) 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, 180358401 + ... + 180402806.

It is an arithmetic number, because the mean of its divisors is an integer number (964555216456).

Almost surely, 2^{8009981079021} is an apocalyptic number.

It is an amenable number.

8009981079021 is a deficient number, since it is larger than the sum of its proper divisors (3564681518451).

8009981079021 is a wasteful number, since it uses less digits than its factorization.

8009981079021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360763680 (or 360763677 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 54.

The spelling of 8009981079021 in words is "eight trillion, nine billion, nine hundred eighty-one million, seventy-nine thousand, twenty-one".