8661311125 has 16 divisors (see below), whose sum is σ = 10844121600. Its totient is φ = 6906738000.

The previous prime is 8661311119. The next prime is 8661311161. The reversal of 8661311125 is 5211131668.

It is not a de Polignac number, because 8661311125 - 2¹⁵ = 8661278357 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72525 + ... + 150274.

It is an arithmetic number, because the mean of its divisors is an integer number (677757600).

Almost surely, 2^8661311125 is an apocalyptic number.

It is an amenable number.

8661311125 is a deficient number, since it is larger than the sum of its proper divisors (2182810475).

8661311125 is a wasteful number, since it uses less digits than its factorization.

8661311125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223125 (or 223115 counting only the distinct ones).

The product of its digits is 8640, while the sum is 34.

The square root of 8661311125 is about 93066.1653072694. The cubic root of 8661311125 is about 2053.6568577873.

The spelling of 8661311125 in words is "eight billion, six hundred sixty-one million, three hundred eleven thousand, one hundred twenty-five".