78323393100 has 36 divisors (see below), whose sum is σ = 226615684904. Its totient is φ = 20886238080.

The previous prime is 78323393069. The next prime is 78323393119. The reversal of 78323393100 is 139332387.

It is a super-2 number, since 2×78323393100² (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, 130538689 + ... + 130539288.

Almost surely, 2^78323393100 is an apocalyptic number.

It is an amenable number.

78323393100 is an abundant number, since it is smaller than the sum of its proper divisors (148292291804).

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

78323393100 is a wasteful number, since it uses less digits than its factorization.

78323393100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261077994 (or 261077987 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 39.

The spelling of 78323393100 in words is "seventy-eight billion, three hundred twenty-three million, three hundred ninety-three thousand, one hundred".