8079615981 has 24 divisors (see below), whose sum is σ = 12114296064. Its totient is φ = 5185366560.

The previous prime is 8079615913. The next prime is 8079615989. The reversal of 8079615981 is 1895169708.

It is not a de Polignac number, because 8079615981 - 2⁷ = 8079615853 is a prime.

It is a super-2 number, since 2×8079615981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8079615989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130761 + ... + 182366.

It is an arithmetic number, because the mean of its divisors is an integer number (504762336).

Almost surely, 2^8079615981 is an apocalyptic number.

It is an amenable number.

8079615981 is a deficient number, since it is larger than the sum of its proper divisors (4034680083).

8079615981 is a wasteful number, since it uses less digits than its factorization.

8079615981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313241 (or 313238 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 54.

The square root of 8079615981 is about 89886.6841139443. The cubic root of 8079615981 is about 2006.6127765789.

The spelling of 8079615981 in words is "eight billion, seventy-nine million, six hundred fifteen thousand, nine hundred eighty-one".