78587285800 has 24 divisors (see below), whose sum is σ = 182715439950. Its totient is φ = 31434914240.

The previous prime is 78587285717. The next prime is 78587285807. The reversal of 78587285800 is 858278587.

It can be written as a sum of positive squares in 3 ways, for example, as 42183408996 + 36403876804 = 205386^2 + 190798^2 .

It is a super-2 number, since 2×78587285800² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78587285807) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 196468015 + ... + 196468414.

Almost surely, 2^78587285800 is an apocalyptic number.

It is an amenable number.

78587285800 is an abundant number, since it is smaller than the sum of its proper divisors (104128154150).

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

78587285800 is a wasteful number, since it uses less digits than its factorization.

78587285800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392936445 (or 392936436 counting only the distinct ones).

The product of its (nonzero) digits is 10035200, while the sum is 58.

The spelling of 78587285800 in words is "seventy-eight billion, five hundred eighty-seven million, two hundred eighty-five thousand, eight hundred".