12186747507 has 32 divisors (see below), whose sum is σ = 17959772160. Its totient is φ = 7289118720.

The previous prime is 12186747479. The next prime is 12186747523. The reversal of 12186747507 is 70574768121.

It is not a de Polignac number, because 12186747507 - 2⁷ = 12186747379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12186747527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 917838 + ... + 931020.

It is an arithmetic number, because the mean of its divisors is an integer number (561242880).

Almost surely, 2^12186747507 is an apocalyptic number.

12186747507 is a deficient number, since it is larger than the sum of its proper divisors (5773024653).

12186747507 is a wasteful number, since it uses less digits than its factorization.

12186747507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13563.

The product of its (nonzero) digits is 658560, while the sum is 48.

The spelling of 12186747507 in words is "twelve billion, one hundred eighty-six million, seven hundred forty-seven thousand, five hundred seven".