78949600000 has 432 divisors, whose sum is σ = 211253041440. Its totient is φ = 29388800000.

The previous prime is 78949599997. The next prime is 78949600019. The reversal of 78949600000 is 694987.

It is a self number, because there is not a number n which added to its sum of digits gives 78949600000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 951199959 + ... + 951200041.

It is an arithmetic number, because the mean of its divisors is an integer number (489011670).

Almost surely, 2^78949600000 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 78949600000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105626520720).

78949600000 is an abundant number, since it is smaller than the sum of its proper divisors (132303441440).

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

78949600000 is an frugal number, since it uses more digits than its factorization.

78949600000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 78949600000 in words is "seventy-eight billion, nine hundred forty-nine million, six hundred thousand".