11636422051 has 4 divisors (see below), whose sum is σ = 11641129912. Its totient is φ = 11631714192.

The previous prime is 11636422033. The next prime is 11636422097. The reversal of 11636422051 is 15022463611.

It is a happy number.

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 11636422051 - 2²⁹ = 11099551139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11636422001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2350221 + ... + 2355166.

It is an arithmetic number, because the mean of its divisors is an integer number (2910282478).

Almost surely, 2^11636422051 is an apocalyptic number.

11636422051 is a deficient number, since it is larger than the sum of its proper divisors (4707861).

11636422051 is an equidigital number, since it uses as much as digits as its factorization.

11636422051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4707860.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 11636422051 its reverse (15022463611), we get a palindrome (26658885662).

The spelling of 11636422051 in words is "eleven billion, six hundred thirty-six million, four hundred twenty-two thousand, fifty-one".