8715972081 has 32 divisors (see below), whose sum is σ = 12076397568. Its totient is φ = 5587081920.

The previous prime is 8715972071. The next prime is 8715972091. The reversal of 8715972081 is 1802795178.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8715972071) and next prime (8715972091).

It is not a de Polignac number, because 8715972081 - 2¹³ = 8715963889 is a prime.

It is a super-2 number, since 2×8715972081² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8715972081.

It is not an unprimeable number, because it can be changed into a prime (8715972071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7493806 + ... + 7494968.

It is an arithmetic number, because the mean of its divisors is an integer number (377387424).

Almost surely, 2^8715972081 is an apocalyptic number.

It is an amenable number.

8715972081 is a deficient number, since it is larger than the sum of its proper divisors (3360425487).

8715972081 is a wasteful number, since it uses less digits than its factorization.

8715972081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941.

The product of its (nonzero) digits is 282240, while the sum is 48.

The square root of 8715972081 is about 93359.3706116317. The cubic root of 8715972081 is about 2057.9679651827.

The spelling of 8715972081 in words is "eight billion, seven hundred fifteen million, nine hundred seventy-two thousand, eighty-one".