12501500443 has 6 divisors (see below), whose sum is σ = 13280140916. Its totient is φ = 11766117792.

The previous prime is 12501500413. The next prime is 12501500519. The reversal of 12501500443 is 34400510521.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-12501500443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12501500413) 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, 21628605 + ... + 21629182.

Almost surely, 2^12501500443 is an apocalyptic number.

12501500443 is a deficient number, since it is larger than the sum of its proper divisors (778640473).

12501500443 is an equidigital number, since it uses as much as digits as its factorization.

12501500443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43257821 (or 43257804 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 12501500443 in words is "twelve billion, five hundred one million, five hundred thousand, four hundred forty-three".