117566677889 has 4 divisors (see below), whose sum is σ = 118035071280. Its totient is φ = 117098284500.

The previous prime is 117566677883. The next prime is 117566677919. The reversal of 117566677889 is 988776665711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 988776665711 = 103067 ⋅9593533.

It is a cyclic number.

It is not a de Polignac number, because 117566677889 - 2²⁴ = 117549900673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117566677883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234196319 + ... + 234196820.

It is an arithmetic number, because the mean of its divisors is an integer number (29508767820).

Almost surely, 2^117566677889 is an apocalyptic number.

It is an amenable number.

117566677889 is a deficient number, since it is larger than the sum of its proper divisors (468393391).

117566677889 is an equidigital number, since it uses as much as digits as its factorization.

117566677889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468393390.

The product of its digits is 213373440, while the sum is 71.

The spelling of 117566677889 in words is "one hundred seventeen billion, five hundred sixty-six million, six hundred seventy-seven thousand, eight hundred eighty-nine".