78287365912 has 16 divisors (see below), whose sum is σ = 167758641360. Its totient is φ = 33551728224.

The previous prime is 78287365903. The next prime is 78287365997. The reversal of 78287365912 is 21956378287.

It is a happy number.

It is a super-2 number, since 2×78287365912² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 698994283 + ... + 698994394.

It is an arithmetic number, because the mean of its divisors is an integer number (10484915085).

Almost surely, 2^78287365912 is an apocalyptic number.

It is an amenable number.

78287365912 is an abundant number, since it is smaller than the sum of its proper divisors (89471275448).

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

78287365912 is a wasteful number, since it uses less digits than its factorization.

78287365912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397988690 (or 1397988686 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 58.

The spelling of 78287365912 in words is "seventy-eight billion, two hundred eighty-seven million, three hundred sixty-five thousand, nine hundred twelve".