12591230800 has 30 divisors (see below), whose sum is σ = 30250432958. Its totient is φ = 5036492160.

The previous prime is 12591230789. The next prime is 12591230819. The reversal of 12591230800 is 803219521.

It can be written as a sum of positive squares in 3 ways, for example, as 3299813136 + 9291417664 = 57444^2 + 96392^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15738639 + ... + 15739438.

Almost surely, 2^12591230800 is an apocalyptic number.

12591230800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12591230800 is an abundant number, since it is smaller than the sum of its proper divisors (17659202158).

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

12591230800 is a wasteful number, since it uses less digits than its factorization.

12591230800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31478095 (or 31478084 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The spelling of 12591230800 in words is "twelve billion, five hundred ninety-one million, two hundred thirty thousand, eight hundred".