11997964383 has 4 divisors (see below), whose sum is σ = 15997285848. Its totient is φ = 7998642920.

The previous prime is 11997964369. The next prime is 11997964403. The reversal of 11997964383 is 38346979911.

11997964383 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 is a cyclic number.

It is not a de Polignac number, because 11997964383 - 2²⁰ = 11996915807 is a prime.

It is a super-2 number, since 2×11997964383² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11997964343) 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, 1999660728 + ... + 1999660733.

It is an arithmetic number, because the mean of its divisors is an integer number (3999321462).

Almost surely, 2^11997964383 is an apocalyptic number.

11997964383 is a deficient number, since it is larger than the sum of its proper divisors (3999321465).

11997964383 is an equidigital number, since it uses as much as digits as its factorization.

11997964383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3999321464.

The product of its digits is 8817984, while the sum is 60.

The spelling of 11997964383 in words is "eleven billion, nine hundred ninety-seven million, nine hundred sixty-four thousand, three hundred eighty-three".