8615981105 has 4 divisors (see below), whose sum is σ = 10339177332. Its totient is φ = 6892784880.

The previous prime is 8615981071. The next prime is 8615981131. The reversal of 8615981105 is 5011895168.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5181552289 + 3434428816 = 71983^2 + 58604^2 .

It is not a de Polignac number, because 8615981105 - 2¹⁶ = 8615915569 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 861598106 + ... + 861598115.

It is an arithmetic number, because the mean of its divisors is an integer number (2584794333).

Almost surely, 2^8615981105 is an apocalyptic number.

It is an amenable number.

8615981105 is a deficient number, since it is larger than the sum of its proper divisors (1723196227).

8615981105 is a wasteful number, since it uses less digits than its factorization.

8615981105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723196226.

The product of its (nonzero) digits is 86400, while the sum is 44.

The square root of 8615981105 is about 92822.3093065455. The cubic root of 8615981105 is about 2050.0679021728.

The spelling of 8615981105 in words is "eight billion, six hundred fifteen million, nine hundred eighty-one thousand, one hundred five".