12249516691 has 16 divisors (see below), whose sum is σ = 12507264000. Its totient is φ = 11994840000.

The previous prime is 12249516679. The next prime is 12249516749. The reversal of 12249516691 is 19661594221.

It is a cyclic number.

It is not a de Polignac number, because 12249516691 - 2⁹ = 12249516179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12249516091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8755210 + ... + 8756608.

It is an arithmetic number, because the mean of its divisors is an integer number (781704000).

Almost surely, 2^12249516691 is an apocalyptic number.

12249516691 is a deficient number, since it is larger than the sum of its proper divisors (257747309).

12249516691 is a wasteful number, since it uses less digits than its factorization.

12249516691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2370.

The product of its digits is 233280, while the sum is 46.

The spelling of 12249516691 in words is "twelve billion, two hundred forty-nine million, five hundred sixteen thousand, six hundred ninety-one".