78911331168 has 24 divisors (see below), whose sum is σ = 207142244568. Its totient is φ = 26303777024.

The previous prime is 78911331167. The next prime is 78911331179. The reversal of 78911331168 is 86113311987.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78911331167) 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, 410996421 + ... + 410996612.

It is an arithmetic number, because the mean of its divisors is an integer number (8630926857).

Almost surely, 2^78911331168 is an apocalyptic number.

It is an amenable number.

78911331168 is an abundant number, since it is smaller than the sum of its proper divisors (128230913400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78911331168 is a wasteful number, since it uses less digits than its factorization.

78911331168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821993046 (or 821993038 counting only the distinct ones).

The product of its digits is 217728, while the sum is 48.

The spelling of 78911331168 in words is "seventy-eight billion, nine hundred eleven million, three hundred thirty-one thousand, one hundred sixty-eight".