11644417137 has 4 divisors (see below), whose sum is σ = 15525889520. Its totient is φ = 7762944756.

The previous prime is 11644417133. The next prime is 11644417153. The reversal of 11644417137 is 73171444611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11644417137 - 2² = 11644417133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11644417095 and 11644417104.

It is not an unprimeable number, because it can be changed into a prime (11644417133) 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, 1940736187 + ... + 1940736192.

It is an arithmetic number, because the mean of its divisors is an integer number (3881472380).

Almost surely, 2^11644417137 is an apocalyptic number.

It is an amenable number.

11644417137 is a deficient number, since it is larger than the sum of its proper divisors (3881472383).

11644417137 is an equidigital number, since it uses as much as digits as its factorization.

11644417137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3881472382.

The product of its digits is 56448, while the sum is 39.

The spelling of 11644417137 in words is "eleven billion, six hundred forty-four million, four hundred seventeen thousand, one hundred thirty-seven".