8715015481 has 2 divisors, whose sum is σ = 8715015482. Its totient is φ = 8715015480.

The previous prime is 8715015469. The next prime is 8715015511. The reversal of 8715015481 is 1845105178.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7723773225 + 991242256 = 87885^2 + 31484^2 .

It is a cyclic number.

It is not a de Polignac number, because 8715015481 - 2⁹ = 8715014969 is a prime.

It is a super-2 number, since 2×8715015481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8715015401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4357507740 + 4357507741.

It is an arithmetic number, because the mean of its divisors is an integer number (4357507741).

Almost surely, 2^8715015481 is an apocalyptic number.

It is an amenable number.

8715015481 is a deficient number, since it is larger than the sum of its proper divisors (1).

8715015481 is an equidigital number, since it uses as much as digits as its factorization.

8715015481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44800, while the sum is 40.

The square root of 8715015481 is about 93354.2472574226. The cubic root of 8715015481 is about 2057.8926733635.

The spelling of 8715015481 in words is "eight billion, seven hundred fifteen million, fifteen thousand, four hundred eighty-one".