12509544700 has 36 divisors (see below), whose sum is σ = 28021387072. Its totient is φ = 4842403200.

The previous prime is 12509544659. The next prime is 12509544709. The reversal of 12509544700 is 744590521.

It is a self number, because there is not a number n which added to its sum of digits gives 12509544700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12509544709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2014569 + ... + 2020768.

Almost surely, 2^12509544700 is an apocalyptic number.

12509544700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12509544700 is an abundant number, since it is smaller than the sum of its proper divisors (15511842372).

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

12509544700 is a wasteful number, since it uses less digits than its factorization.

12509544700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4035382 (or 4035375 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 12509544700 in words is "twelve billion, five hundred nine million, five hundred forty-four thousand, seven hundred".