11831832081 has 48 divisors (see below), whose sum is σ = 17932824000. Its totient is φ = 7795268928.

The previous prime is 11831832079. The next prime is 11831832097. The reversal of 11831832081 is 18023813811.

11831832081 is a `hidden beast` number, since 1 + 18 + 318 + 320 + 8 + 1 = 666.

It is not a de Polignac number, because 11831832081 - 2¹ = 11831832079 is a prime.

It is a super-2 number, since 2×11831832081² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11831832071) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8290690 + ... + 8292116.

It is an arithmetic number, because the mean of its divisors is an integer number (373600500).

Almost surely, 2^11831832081 is an apocalyptic number.

It is an amenable number.

11831832081 is a deficient number, since it is larger than the sum of its proper divisors (6100991919).

11831832081 is a wasteful number, since it uses less digits than its factorization.

11831832081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820 (or 1808 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The spelling of 11831832081 in words is "eleven billion, eight hundred thirty-one million, eight hundred thirty-two thousand, eighty-one".