12987233626 has 8 divisors (see below), whose sum is σ = 19485469620. Its totient is φ = 6492077088.

The previous prime is 12987233543. The next prime is 12987233629. The reversal of 12987233626 is 62633278921.

It can be written as a sum of positive squares in 2 ways, for example, as 11281626225 + 1705607401 = 106215^2 + 41299^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 12987233626.

It is not an unprimeable number, because it can be changed into a prime (12987233629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 759291 + ... + 776206.

Almost surely, 2^12987233626 is an apocalyptic number.

12987233626 is a deficient number, since it is larger than the sum of its proper divisors (6498235994).

12987233626 is a wasteful number, since it uses less digits than its factorization.

12987233626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539728.

The product of its digits is 1306368, while the sum is 49.

The spelling of 12987233626 in words is "twelve billion, nine hundred eighty-seven million, two hundred thirty-three thousand, six hundred twenty-six".