78318027264 has 40 divisors (see below), whose sum is σ = 208644123600. Its totient is φ = 26106008576.

The previous prime is 78318027233. The next prime is 78318027289. The reversal of 78318027264 is 46272081387.

It is a super-2 number, since 2×78318027264² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25492614 + ... + 25495685.

It is an arithmetic number, because the mean of its divisors is an integer number (5216103090).

Almost surely, 2^78318027264 is an apocalyptic number.

It is an amenable number.

78318027264 is an abundant number, since it is smaller than the sum of its proper divisors (130326096336).

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

78318027264 is an equidigital number, since it uses as much as digits as its factorization.

78318027264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50988320 (or 50988304 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 48.

The spelling of 78318027264 in words is "seventy-eight billion, three hundred eighteen million, twenty-seven thousand, two hundred sixty-four".