78768222912 has 336 divisors, whose sum is σ = 239885597952. Its totient is φ = 24661739520.

The previous prime is 78768222899. The next prime is 78768222913. The reversal of 78768222912 is 21922286787.

It is not an unprimeable number, because it can be changed into a prime (78768222913) 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, 256573863 + ... + 256574169.

It is an arithmetic number, because the mean of its divisors is an integer number (713945232).

Almost surely, 2^78768222912 is an apocalyptic number.

78768222912 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78768222912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119942798976).

78768222912 is an abundant number, since it is smaller than the sum of its proper divisors (161117375040).

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

78768222912 is a wasteful number, since it uses less digits than its factorization.

78768222912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636 (or 623 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The spelling of 78768222912 in words is "seventy-eight billion, seven hundred sixty-eight million, two hundred twenty-two thousand, nine hundred twelve".