11665427699 has 2 divisors, whose sum is σ = 11665427700. Its totient is φ = 11665427698.

The previous prime is 11665427603. The next prime is 11665427713. The reversal of 11665427699 is 99672456611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11665427699 - 2²⁴ = 11648650483 is a prime.

It is not a weakly prime, because it can be changed into another prime (11665421699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5832713849 + 5832713850.

It is an arithmetic number, because the mean of its divisors is an integer number (5832713850).

Almost surely, 2^11665427699 is an apocalyptic number.

11665427699 is a deficient number, since it is larger than the sum of its proper divisors (1).

11665427699 is an equidigital number, since it uses as much as digits as its factorization.

11665427699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 56.

The spelling of 11665427699 in words is "eleven billion, six hundred sixty-five million, four hundred twenty-seven thousand, six hundred ninety-nine".