12549133689 has 8 divisors (see below), whose sum is σ = 16770822432. Its totient is φ = 8346767040.

The previous prime is 12549133687. The next prime is 12549133697. The reversal of 12549133689 is 98633194521.

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

It is not a de Polignac number, because 12549133689 - 2¹ = 12549133687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12549133687) 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, 4829007 + ... + 4831604.

It is an arithmetic number, because the mean of its divisors is an integer number (2096352804).

Almost surely, 2^12549133689 is an apocalyptic number.

It is an amenable number.

12549133689 is a deficient number, since it is larger than the sum of its proper divisors (4221688743).

12549133689 is an equidigital number, since it uses as much as digits as its factorization.

12549133689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9661047.

The product of its digits is 1399680, while the sum is 51.

The spelling of 12549133689 in words is "twelve billion, five hundred forty-nine million, one hundred thirty-three thousand, six hundred eighty-nine".