11691435712 has 28 divisors (see below), whose sum is σ = 25309302696. Its totient is φ = 5314288640.

The previous prime is 11691435709. The next prime is 11691435797. The reversal of 11691435712 is 21753419611.

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, 8302873 + ... + 8304280.

Almost surely, 2^11691435712 is an apocalyptic number.

It is an amenable number.

11691435712 is an abundant number, since it is smaller than the sum of its proper divisors (13617866984).

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

11691435712 is a wasteful number, since it uses less digits than its factorization.

11691435712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16607176 (or 16607166 counting only the distinct ones).

The product of its digits is 45360, while the sum is 40.

The spelling of 11691435712 in words is "eleven billion, six hundred ninety-one million, four hundred thirty-five thousand, seven hundred twelve".