78156922368 has 240 divisors, whose sum is σ = 244088913024. Its totient is φ = 22157291520.

The previous prime is 78156922331. The next prime is 78156922397. The reversal of 78156922368 is 86322965187.

It is a super-2 number, since 2×78156922368² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9855621 + ... + 9863547.

Almost surely, 2^78156922368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78156922368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122044456512).

78156922368 is an abundant number, since it is smaller than the sum of its proper divisors (165931990656).

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

78156922368 is a wasteful number, since it uses less digits than its factorization.

78156922368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8093 (or 8070 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 57.

The spelling of 78156922368 in words is "seventy-eight billion, one hundred fifty-six million, nine hundred twenty-two thousand, three hundred sixty-eight".