12747018500 has 24 divisors (see below), whose sum is σ = 27839489496. Its totient is φ = 5098807200.

The previous prime is 12747018497. The next prime is 12747018533. The reversal of 12747018500 is 581074721.

It can be written as a sum of positive squares in 4 ways, for example, as 133033156 + 12613985344 = 11534^2 + 112312^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12746519 + ... + 12747518.

It is an arithmetic number, because the mean of its divisors is an integer number (1159978729).

Almost surely, 2^12747018500 is an apocalyptic number.

12747018500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12747018500 is an abundant number, since it is smaller than the sum of its proper divisors (15092470996).

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

12747018500 is a wasteful number, since it uses less digits than its factorization.

12747018500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25494056 (or 25494044 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 35.

The spelling of 12747018500 in words is "twelve billion, seven hundred forty-seven million, eighteen thousand, five hundred".