11894397905 has 96 divisors (see below), whose sum is σ = 17584584192. Its totient is φ = 7636654080.

The previous prime is 11894397899. The next prime is 11894397919. The reversal of 11894397905 is 50979349811.

It is not a de Polignac number, because 11894397905 - 2²⁰ = 11893349329 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 24423572 + ... + 24424058.

It is an arithmetic number, because the mean of its divisors is an integer number (183172752).

Almost surely, 2^11894397905 is an apocalyptic number.

It is an amenable number.

11894397905 is a deficient number, since it is larger than the sum of its proper divisors (5690186287).

11894397905 is a wasteful number, since it uses less digits than its factorization.

11894397905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607 (or 576 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 56.

The spelling of 11894397905 in words is "eleven billion, eight hundred ninety-four million, three hundred ninety-seven thousand, nine hundred five".