11931143739 has 8 divisors (see below), whose sum is σ = 15908700480. Its totient is φ = 7953841416.

The previous prime is 11931143729. The next prime is 11931143743. The reversal of 11931143739 is 93734113911.

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

It is not a de Polignac number, because 11931143739 - 2⁹ = 11931143227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11931143739.

It is not an unprimeable number, because it can be changed into a prime (11931143729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130084 + ... + 201950.

It is an arithmetic number, because the mean of its divisors is an integer number (1988587560).

Almost surely, 2^11931143739 is an apocalyptic number.

11931143739 is a deficient number, since it is larger than the sum of its proper divisors (3977556741).

11931143739 is an equidigital number, since it uses as much as digits as its factorization.

11931143739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127209.

The product of its digits is 61236, while the sum is 42.

The spelling of 11931143739 in words is "eleven billion, nine hundred thirty-one million, one hundred forty-three thousand, seven hundred thirty-nine".