11644420413 has 8 divisors (see below), whose sum is σ = 15670996128. Its totient is φ = 7690395824.

The previous prime is 11644420379. The next prime is 11644420429. The reversal of 11644420413 is 31402444611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11644420413 - 2²⁰ = 11643371837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11644420493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18137406 + ... + 18138047.

It is an arithmetic number, because the mean of its divisors is an integer number (1958874516).

Almost surely, 2^11644420413 is an apocalyptic number.

It is an amenable number.

11644420413 is a deficient number, since it is larger than the sum of its proper divisors (4026575715).

11644420413 is a wasteful number, since it uses less digits than its factorization.

11644420413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36275563.

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 11644420413 in words is "eleven billion, six hundred forty-four million, four hundred twenty thousand, four hundred thirteen".