11886996749 has 4 divisors (see below), whose sum is σ = 11906263164. Its totient is φ = 11867730336.

The previous prime is 11886996703. The next prime is 11886996757. The reversal of 11886996749 is 94769968811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3104495524 + 8782501225 = 55718^2 + 93715^2 .

It is a cyclic number.

It is not a de Polignac number, because 11886996749 - 2²⁸ = 11618561293 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 (11886996949) 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, 9632282 + ... + 9633515.

It is an arithmetic number, because the mean of its divisors is an integer number (2976565791).

Almost surely, 2^11886996749 is an apocalyptic number.

It is an amenable number.

11886996749 is a deficient number, since it is larger than the sum of its proper divisors (19266415).

11886996749 is an equidigital number, since it uses as much as digits as its factorization.

11886996749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19266414.

The product of its digits is 47029248, while the sum is 68.

The spelling of 11886996749 in words is "eleven billion, eight hundred eighty-six million, nine hundred ninety-six thousand, seven hundred forty-nine".