78312851300 has 36 divisors (see below), whose sum is σ = 173890964016. Its totient is φ = 30596647200.

The previous prime is 78312851299. The next prime is 78312851311. The reversal of 78312851300 is 315821387.

It is a happy number.

It is a super-2 number, since 2×78312851300² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9101846 + ... + 9110445.

It is an arithmetic number, because the mean of its divisors is an integer number (4830304556).

Almost surely, 2^78312851300 is an apocalyptic number.

It is an amenable number.

78312851300 is an abundant number, since it is smaller than the sum of its proper divisors (95578112716).

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

78312851300 is a wasteful number, since it uses less digits than its factorization.

78312851300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18212348 (or 18212341 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 78312851300 in words is "seventy-eight billion, three hundred twelve million, eight hundred fifty-one thousand, three hundred".