11643711439 has 12 divisors (see below), whose sum is σ = 12086671896. Its totient is φ = 11216467808.

The previous prime is 11643711437. The next prime is 11643711463. The reversal of 11643711439 is 93411734611.

It is not a de Polignac number, because 11643711439 - 2¹ = 11643711437 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 (11643711437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 356937 + ... + 388189.

It is an arithmetic number, because the mean of its divisors is an integer number (1007222658).

Almost surely, 2^11643711439 is an apocalyptic number.

11643711439 is a deficient number, since it is larger than the sum of its proper divisors (442960457).

11643711439 is an equidigital number, since it uses as much as digits as its factorization.

11643711439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31754 (or 31725 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The spelling of 11643711439 in words is "eleven billion, six hundred forty-three million, seven hundred eleven thousand, four hundred thirty-nine".