11143640432 has 20 divisors (see below), whose sum is σ = 22287281856. Its totient is φ = 5392083840.

The previous prime is 11143640423. The next prime is 11143640449. The reversal of 11143640432 is 23404634111.

It is a happy number.

11143640432 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 11143640395 and 11143640404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11233013 + ... + 11234004.

Almost surely, 2^11143640432 is an apocalyptic number.

It is an amenable number.

11143640432 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11143640432 is a wasteful number, since it uses less digits than its factorization.

11143640432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22467056 (or 22467050 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 11143640432 in words is "eleven billion, one hundred forty-three million, six hundred forty thousand, four hundred thirty-two".