12807644500 has 72 divisors (see below), whose sum is σ = 32538797928. Its totient is φ = 4391184000.

The previous prime is 12807644429. The next prime is 12807644503. The reversal of 12807644500 is 544670821.

It can be written as a sum of positive squares in 4 ways, for example, as 68459076 + 12739185424 = 8274^2 + 112868^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12807644500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12807644503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 236881 + ... + 285880.

It is an arithmetic number, because the mean of its divisors is an integer number (451927749).

Almost surely, 2^12807644500 is an apocalyptic number.

12807644500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12807644500 is an abundant number, since it is smaller than the sum of its proper divisors (19731153428).

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

12807644500 is a wasteful number, since it uses less digits than its factorization.

12807644500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522794 (or 522775 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 12807644500 in words is "twelve billion, eight hundred seven million, six hundred forty-four thousand, five hundred".