78914469888 has 480 divisors, whose sum is σ = 253223376000. Its totient is φ = 24206376960.

The previous prime is 78914469857. The next prime is 78914469917. The reversal of 78914469888 is 88896441987.

It is a happy number.

78914469888 is a `hidden beast` number, since 7 + 8 + 91 + 446 + 98 + 8 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 344604558 + ... + 344604786.

It is an arithmetic number, because the mean of its divisors is an integer number (527548700).

Almost surely, 2^78914469888 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 78914469888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126611688000).

78914469888 is an abundant number, since it is smaller than the sum of its proper divisors (174308906112).

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

78914469888 is a wasteful number, since it uses less digits than its factorization.

78914469888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 294 counting only the distinct ones).

The product of its digits is 222953472, while the sum is 72.

The spelling of 78914469888 in words is "seventy-eight billion, nine hundred fourteen million, four hundred sixty-nine thousand, eight hundred eighty-eight".