78288179872 has 24 divisors (see below), whose sum is σ = 176148405216. Its totient is φ = 33552076992.

The previous prime is 78288179831. The next prime is 78288179873. The reversal of 78288179872 is 27897188287.

It is a super-2 number, since 2×78288179872² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78288179798 and 78288179807.

It is not an unprimeable number, because it can be changed into a prime (78288179873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174750178 + ... + 174750625.

It is an arithmetic number, because the mean of its divisors is an integer number (7339516884).

Almost surely, 2^78288179872 is an apocalyptic number.

It is an amenable number.

78288179872 is an abundant number, since it is smaller than the sum of its proper divisors (97860225344).

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

78288179872 is a wasteful number, since it uses less digits than its factorization.

78288179872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349500820 (or 349500812 counting only the distinct ones).

The product of its digits is 50577408, while the sum is 67.

The spelling of 78288179872 in words is "seventy-eight billion, two hundred eighty-eight million, one hundred seventy-nine thousand, eight hundred seventy-two".