78919468704 has 144 divisors (see below), whose sum is σ = 239168547072. Its totient is φ = 24627254784.

The previous prime is 78919468699. The next prime is 78919468709. The reversal of 78919468704 is 40786491987.

It is an interprime number because it is at equal distance from previous prime (78919468699) and next prime (78919468709).

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (78919468709) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184582 + ... + 438074.

It is an arithmetic number, because the mean of its divisors is an integer number (1660892688).

Almost surely, 2^78919468704 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 78919468704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119584273536).

78919468704 is an abundant number, since it is smaller than the sum of its proper divisors (160249078368).

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

78919468704 is a wasteful number, since it uses less digits than its factorization.

78919468704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253579 (or 253568 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 63.

The spelling of 78919468704 in words is "seventy-eight billion, nine hundred nineteen million, four hundred sixty-eight thousand, seven hundred four".