12366116949591 has 24 divisors (see below), whose sum is σ = 17998458164336. Its totient is φ = 8181325555200.

The previous prime is 12366116949503. The next prime is 12366116949619. The reversal of 12366116949591 is 19594961166321.

It is a happy number.

12366116949591 is a `hidden beast` number, since 1 + 2 + 3 + 6 + 611 + 6 + 9 + 4 + 9 + 5 + 9 + 1 = 666.

12366116949591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12366116949591 - 2⁷ = 12366116949463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12366116949691) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5275360 + ... + 7249941.

Almost surely, 2^{12366116949591} is an apocalyptic number.

12366116949591 is a deficient number, since it is larger than the sum of its proper divisors (5632341214745).

12366116949591 is a wasteful number, since it uses less digits than its factorization.

12366116949591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12526143 (or 12526140 counting only the distinct ones).

The product of its digits is 18895680, while the sum is 63.

The spelling of 12366116949591 in words is "twelve trillion, three hundred sixty-six billion, one hundred sixteen million, nine hundred forty-nine thousand, five hundred ninety-one".