78338012278400 has 96 divisors (see below), whose sum is σ = 221164995442080. Its totient is φ = 26858747059200.

The previous prime is 78338012278399. The next prime is 78338012278403. The reversal of 78338012278400 is 487221083387.

It is a super-2 number, since 2×78338012278400² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78338012278403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1748593946 + ... + 1748638745.

It is an arithmetic number, because the mean of its divisors is an integer number (2303802035855).

Almost surely, 2^{78338012278400} is an apocalyptic number.

78338012278400 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78338012278400 is an abundant number, since it is smaller than the sum of its proper divisors (142826983163680).

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

78338012278400 is a wasteful number, since it uses less digits than its factorization.

78338012278400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3497232722 (or 3497232705 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 53.

The spelling of 78338012278400 in words is "seventy-eight trillion, three hundred thirty-eight billion, twelve million, two hundred seventy-eight thousand, four hundred".