11044721399 has 4 divisors (see below), whose sum is σ = 11047106880. Its totient is φ = 11042335920.

The previous prime is 11044721383. The next prime is 11044721419. The reversal of 11044721399 is 99312744011.

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 11044721399 - 2⁴ = 11044721383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11044721339) 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, 1185782 + ... + 1195059.

It is an arithmetic number, because the mean of its divisors is an integer number (2761776720).

Almost surely, 2^11044721399 is an apocalyptic number.

11044721399 is a deficient number, since it is larger than the sum of its proper divisors (2385481).

11044721399 is an equidigital number, since it uses as much as digits as its factorization.

11044721399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2385480.

The product of its (nonzero) digits is 54432, while the sum is 41.

The spelling of 11044721399 in words is "eleven billion, forty-four million, seven hundred twenty-one thousand, three hundred ninety-nine".