11640445799 has 4 divisors (see below), whose sum is σ = 11814183864. Its totient is φ = 11466707736.

The previous prime is 11640445787. The next prime is 11640445813. The reversal of 11640445799 is 99754404611.

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

It is a cyclic number.

It is not a de Polignac number, because 11640445799 - 2⁴ = 11640445783 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 (11640415799) 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, 86868932 + ... + 86869065.

It is an arithmetic number, because the mean of its divisors is an integer number (2953545966).

Almost surely, 2^11640445799 is an apocalyptic number.

11640445799 is a deficient number, since it is larger than the sum of its proper divisors (173738065).

11640445799 is an equidigital number, since it uses as much as digits as its factorization.

11640445799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173738064.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 11640445799 in words is "eleven billion, six hundred forty million, four hundred forty-five thousand, seven hundred ninety-nine".