78838297084724 has 6 divisors (see below), whose sum is σ = 137967019898274. Its totient is φ = 39419148542360.

The previous prime is 78838297084697. The next prime is 78838297084769. The reversal of 78838297084724 is 42748079283887.

It can be written as a sum of positive squares in only one way, i.e., 40891957881124 + 37946339203600 = 6394682^2 + 6160060^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9854787135587 + ... + 9854787135594.

It is an arithmetic number, because the mean of its divisors is an integer number (22994503316379).

Almost surely, 2^{78838297084724} is an apocalyptic number.

It is an amenable number.

78838297084724 is a deficient number, since it is larger than the sum of its proper divisors (59128722813550).

78838297084724 is a wasteful number, since it uses less digits than its factorization.

78838297084724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19709574271185 (or 19709574271183 counting only the distinct ones).

The product of its (nonzero) digits is 2427715584, while the sum is 77.

The spelling of 78838297084724 in words is "seventy-eight trillion, eight hundred thirty-eight billion, two hundred ninety-seven million, eighty-four thousand, seven hundred twenty-four".