11939744905 has 8 divisors (see below), whose sum is σ = 15630211584. Its totient is φ = 8683450800.

The previous prime is 11939744899. The next prime is 11939744909. The reversal of 11939744905 is 50944793911.

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

It is not a de Polignac number, because 11939744905 - 2¹⁹ = 11939220617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11939744909) 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, 108543081 + ... + 108543190.

It is an arithmetic number, because the mean of its divisors is an integer number (1953776448).

Almost surely, 2^11939744905 is an apocalyptic number.

It is an amenable number.

11939744905 is a deficient number, since it is larger than the sum of its proper divisors (3690466679).

11939744905 is a wasteful number, since it uses less digits than its factorization.

11939744905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217086287.

The product of its (nonzero) digits is 1224720, while the sum is 52.

The spelling of 11939744905 in words is "eleven billion, nine hundred thirty-nine million, seven hundred forty-four thousand, nine hundred five".