78847763904 has 1120 divisors, whose sum is σ = 308972590080. Its totient is φ = 19428304896.

The previous prime is 78847763809. The next prime is 78847763921. The reversal of 78847763904 is 40936774887.

78847763904 is a `hidden beast` number, since 78 + 8 + 477 + 6 + 3 + 90 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

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 159 ways as a sum of consecutive naturals, for example, 1833668907 + ... + 1833668949.

It is an arithmetic number, because the mean of its divisors is an integer number (275868384).

Almost surely, 2^78847763904 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 78847763904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154486295040).

78847763904 is an abundant number, since it is smaller than the sum of its proper divisors (230124826176).

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

78847763904 is a wasteful number, since it uses less digits than its factorization.

78847763904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 56899584, while the sum is 63.

The spelling of 78847763904 in words is "seventy-eight billion, eight hundred forty-seven million, seven hundred sixty-three thousand, nine hundred four".