8880071658665 has 4 divisors (see below), whose sum is σ = 10656085990404. Its totient is φ = 7104057326928.

The previous prime is 8880071658649. The next prime is 8880071658701. The reversal of 8880071658665 is 5668561700888.

It is a happy number.

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 6987928353961 + 1892143304704 = 2643469^2 + 1375552^2 .

It is a cyclic number.

It is not a de Polignac number, because 8880071658665 - 2⁴ = 8880071658649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8880071658595 and 8880071658604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 888007165862 + ... + 888007165871.

It is an arithmetic number, because the mean of its divisors is an integer number (2664021497601).

Almost surely, 2^{8880071658665} is an apocalyptic number.

It is an amenable number.

8880071658665 is a deficient number, since it is larger than the sum of its proper divisors (1776014331739).

8880071658665 is a wasteful number, since it uses less digits than its factorization.

8880071658665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776014331738.

The product of its (nonzero) digits is 154828800, while the sum is 68.

The spelling of 8880071658665 in words is "eight trillion, eight hundred eighty billion, seventy-one million, six hundred fifty-eight thousand, six hundred sixty-five".