11633229991 has 2 divisors, whose sum is σ = 11633229992. Its totient is φ = 11633229990.

The previous prime is 11633229989. The next prime is 11633230003. The reversal of 11633229991 is 19992233611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11633229991 - 2¹ = 11633229989 is a prime.

Together with 11633229989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11633229191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5816614995 + 5816614996.

It is an arithmetic number, because the mean of its divisors is an integer number (5816614996).

Almost surely, 2^11633229991 is an apocalyptic number.

11633229991 is a deficient number, since it is larger than the sum of its proper divisors (1).

11633229991 is an equidigital number, since it uses as much as digits as its factorization.

11633229991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 157464, while the sum is 46.

The spelling of 11633229991 in words is "eleven billion, six hundred thirty-three million, two hundred twenty-nine thousand, nine hundred ninety-one".