12501126609 has 8 divisors (see below), whose sum is σ = 16670509152. Its totient is φ = 8332914240.

The previous prime is 12501126601. The next prime is 12501126623. The reversal of 12501126609 is 90662110521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12501126609 - 2³ = 12501126601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12501126609.

It is not an unprimeable number, because it can be changed into a prime (12501126601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267304 + ... + 310569.

It is an arithmetic number, because the mean of its divisors is an integer number (2083813644).

Almost surely, 2^12501126609 is an apocalyptic number.

It is an amenable number.

12501126609 is a deficient number, since it is larger than the sum of its proper divisors (4169382543).

12501126609 is an equidigital number, since it uses as much as digits as its factorization.

12501126609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585087.

The product of its (nonzero) digits is 6480, while the sum is 33.

The spelling of 12501126609 in words is "twelve billion, five hundred one million, one hundred twenty-six thousand, six hundred nine".