11891225432 has 16 divisors (see below), whose sum is σ = 22716728640. Its totient is φ = 5833431136.

The previous prime is 11891225419. The next prime is 11891225443. The reversal of 11891225432 is 23452219811.

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, 14022248 + ... + 14023095.

It is an arithmetic number, because the mean of its divisors is an integer number (1419795540).

Almost surely, 2^11891225432 is an apocalyptic number.

It is an amenable number.

11891225432 is a deficient number, since it is larger than the sum of its proper divisors (10825503208).

11891225432 is a wasteful number, since it uses less digits than its factorization.

11891225432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28045402 (or 28045398 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The spelling of 11891225432 in words is "eleven billion, eight hundred ninety-one million, two hundred twenty-five thousand, four hundred thirty-two".