78649714944 has 432 divisors, whose sum is σ = 242783049600. Its totient is φ = 24445747200.

The previous prime is 78649714943. The next prime is 78649714951. The reversal of 78649714944 is 44941794687.

78649714944 is a `hidden beast` number, since 78 + 6 + 4 + 9 + 71 + 494 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (78649714943) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 279892084 + ... + 279892364.

It is an arithmetic number, because the mean of its divisors is an integer number (561997800).

Almost surely, 2^78649714944 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 78649714944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121391524800).

78649714944 is an abundant number, since it is smaller than the sum of its proper divisors (164133334656).

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

78649714944 is a wasteful number, since it uses less digits than its factorization.

78649714944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 445 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 63.

The spelling of 78649714944 in words is "seventy-eight billion, six hundred forty-nine million, seven hundred fourteen thousand, nine hundred forty-four".