8715902881 has 9 divisors (see below), whose sum is σ = 10139667699. Its totient is φ = 7470213744.

The previous prime is 8715902869. The next prime is 8715902903. The reversal of 8715902881 is 1882095178.

The square root of 8715902881 is 93359.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2445797025 + 6270105856 = 49455^2 + 79184^2 .

It is not a de Polignac number, because 8715902881 - 2⁵ = 8715902849 is a prime.

It is a super-2 number, since 2×8715902881² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (8715902801) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 646845 + ... + 660181.

Almost surely, 2^8715902881 is an apocalyptic number.

8715902881 is the 93359-th square number.

8715902881 is the 46680-th centered octagonal number.

It is an amenable number.

8715902881 is a deficient number, since it is larger than the sum of its proper divisors (1423764818).

8715902881 is an frugal number, since it uses more digits than its factorization.

8715902881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26688 (or 13344 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 49.

The cubic root of 8715902881 is about 2057.9625187923.

Multiplying 8715902881 by its sum of digits (49), we get a square (427079241169 = 653513²).

8715902881 divided by its sum of digits (49) gives a square (177875569 = 13337²).

The spelling of 8715902881 in words is "eight billion, seven hundred fifteen million, nine hundred two thousand, eight hundred eighty-one".