78664113189 has 12 divisors (see below), whose sum is σ = 113628418176. Its totient is φ = 52441598952.

The previous prime is 78664113179. The next prime is 78664113193. The reversal of 78664113189 is 98131146687.

It is not a de Polignac number, because 78664113189 - 2¹⁹ = 78663588901 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78664113109) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 635884 + ... + 749450.

It is an arithmetic number, because the mean of its divisors is an integer number (9469034848).

Almost surely, 2^78664113189 is an apocalyptic number.

It is an amenable number.

78664113189 is a deficient number, since it is larger than the sum of its proper divisors (34964304987).

78664113189 is a wasteful number, since it uses less digits than its factorization.

78664113189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190536 (or 190533 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The spelling of 78664113189 in words is "seventy-eight billion, six hundred sixty-four million, one hundred thirteen thousand, one hundred eighty-nine".