11939688943 has 24 divisors (see below), whose sum is σ = 14983958016. Its totient is φ = 9313668000.

The previous prime is 11939688913. The next prime is 11939688949. The reversal of 11939688943 is 34988693911.

It is not a de Polignac number, because 11939688943 - 2³³ = 3349754351 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 (11939688949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12918 + ... + 155068.

It is an arithmetic number, because the mean of its divisors is an integer number (624331584).

Almost surely, 2^11939688943 is an apocalyptic number.

11939688943 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11939688943 is a deficient number, since it is larger than the sum of its proper divisors (3044269073).

11939688943 is a wasteful number, since it uses less digits than its factorization.

11939688943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142255 (or 142242 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 61.

The spelling of 11939688943 in words is "eleven billion, nine hundred thirty-nine million, six hundred eighty-eight thousand, nine hundred forty-three".