11885851856 has 20 divisors (see below), whose sum is σ = 23771704704. Its totient is φ = 5751218400.

The previous prime is 11885851823. The next prime is 11885851871. The reversal of 11885851856 is 65815858811.

11885851856 is an admirable number.

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, 11981210 + ... + 11982201.

Almost surely, 2^11885851856 is an apocalyptic number.

11885851856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11885851856 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.

11885851856 is a wasteful number, since it uses less digits than its factorization.

11885851856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23963450 (or 23963444 counting only the distinct ones).

The product of its digits is 3072000, while the sum is 56.

The spelling of 11885851856 in words is "eleven billion, eight hundred eighty-five million, eight hundred fifty-one thousand, eight hundred fifty-six".