78078511368 has 192 divisors, whose sum is σ = 250894687680. Its totient is φ = 21623616000.

The previous prime is 78078511333. The next prime is 78078511393. The reversal of 78078511368 is 86311587087.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1002355 + ... + 1077437.

It is an arithmetic number, because the mean of its divisors is an integer number (1306743165).

Almost surely, 2^78078511368 is an apocalyptic number.

78078511368 is a gapful number since it is divisible by the number (78) 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 78078511368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125447343840).

78078511368 is an abundant number, since it is smaller than the sum of its proper divisors (172816176312).

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

78078511368 is a wasteful number, since it uses less digits than its factorization.

78078511368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75220 (or 75213 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 54.

The spelling of 78078511368 in words is "seventy-eight billion, seventy-eight million, five hundred eleven thousand, three hundred sixty-eight".