11723447636 has 24 divisors (see below), whose sum is σ = 20633343360. Its totient is φ = 5828239872.

The previous prime is 11723447611. The next prime is 11723447647. The reversal of 11723447636 is 63674432711.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2266325 + ... + 2271491.

It is an arithmetic number, because the mean of its divisors is an integer number (859722640).

Almost surely, 2^11723447636 is an apocalyptic number.

It is an amenable number.

11723447636 is a deficient number, since it is larger than the sum of its proper divisors (8909895724).

11723447636 is a wasteful number, since it uses less digits than its factorization.

11723447636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8303 (or 8301 counting only the distinct ones).

The product of its digits is 508032, while the sum is 44.

The spelling of 11723447636 in words is "eleven billion, seven hundred twenty-three million, four hundred forty-seven thousand, six hundred thirty-six".