11993239733 has 4 divisors (see below), whose sum is σ = 12059500908. Its totient is φ = 11926978560.

The previous prime is 11993239703. The next prime is 11993239799. The reversal of 11993239733 is 33793239911.

11993239733 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3587650609 + 8405589124 = 59897^2 + 91682^2 .

It is a cyclic number.

It is not a de Polignac number, because 11993239733 - 2¹⁰ = 11993238709 is a prime.

It is a super-2 number, since 2×11993239733² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11993239703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33130316 + ... + 33130677.

It is an arithmetic number, because the mean of its divisors is an integer number (3014875227).

Almost surely, 2^11993239733 is an apocalyptic number.

It is an amenable number.

11993239733 is a deficient number, since it is larger than the sum of its proper divisors (66261175).

11993239733 is an equidigital number, since it uses as much as digits as its factorization.

11993239733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66261174.

The product of its digits is 826686, while the sum is 50.

The spelling of 11993239733 in words is "eleven billion, nine hundred ninety-three million, two hundred thirty-nine thousand, seven hundred thirty-three".