11905639824 has 40 divisors (see below), whose sum is σ = 33122102272. Its totient is φ = 3663273600.

The previous prime is 11905639817. The next prime is 11905639841. The reversal of 11905639824 is 42893650911.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 9539152 + ... + 9540399.

Almost surely, 2^11905639824 is an apocalyptic number.

It is an amenable number.

11905639824 is an abundant number, since it is smaller than the sum of its proper divisors (21216462448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11905639824 is a wasteful number, since it uses less digits than its factorization.

11905639824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19079575 (or 19079569 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The spelling of 11905639824 in words is "eleven billion, nine hundred five million, six hundred thirty-nine thousand, eight hundred twenty-four".