11683936881 has 16 divisors (see below), whose sum is σ = 17445836800. Its totient is φ = 7727955984.

The previous prime is 11683936877. The next prime is 11683936883. The reversal of 11683936881 is 18863938611.

11683936881 is a `hidden beast` number, since 116 + 8 + 393 + 68 + 81 = 666.

It is not a de Polignac number, because 11683936881 - 2² = 11683936877 is a prime.

It is a super-2 number, since 2×11683936881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11683936883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1700266 + ... + 1707123.

It is an arithmetic number, because the mean of its divisors is an integer number (1090364800).

Almost surely, 2^11683936881 is an apocalyptic number.

It is an amenable number.

11683936881 is a deficient number, since it is larger than the sum of its proper divisors (5761899919).

11683936881 is a wasteful number, since it uses less digits than its factorization.

11683936881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3407525 (or 3407519 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The spelling of 11683936881 in words is "eleven billion, six hundred eighty-three million, nine hundred thirty-six thousand, eight hundred eighty-one".