78282115900 has 36 divisors (see below), whose sum is σ = 174015424800. Its totient is φ = 30549116800.

The previous prime is 78282115867. The next prime is 78282115949. The reversal of 78282115900 is 951128287.

It is a happy number.

It is a super-2 number, since 2×78282115900² (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 11 ways as a sum of consecutive naturals, for example, 9542500 + ... + 9550699.

It is an arithmetic number, because the mean of its divisors is an integer number (4833761800).

Almost surely, 2^78282115900 is an apocalyptic number.

It is an amenable number.

78282115900 is an abundant number, since it is smaller than the sum of its proper divisors (95733308900).

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

78282115900 is a wasteful number, since it uses less digits than its factorization.

78282115900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19093254 (or 19093247 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 43.

The spelling of 78282115900 in words is "seventy-eight billion, two hundred eighty-two million, one hundred fifteen thousand, nine hundred".