32181408881 has 2 divisors, whose sum is σ = 32181408882. Its totient is φ = 32181408880.

The previous prime is 32181408839. The next prime is 32181408929. The reversal of 32181408881 is 18880418123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21692576656 + 10488832225 = 147284^2 + 102415^2 .

It is a cyclic number.

It is not a de Polignac number, because 32181408881 - 2²² = 32177214577 is a prime.

It is a super-2 number, since 2×32181408881² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (32181408781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16090704440 + 16090704441.

It is an arithmetic number, because the mean of its divisors is an integer number (16090704441).

Almost surely, 2^32181408881 is an apocalyptic number.

It is an amenable number.

32181408881 is a deficient number, since it is larger than the sum of its proper divisors (1).

32181408881 is an equidigital number, since it uses as much as digits as its factorization.

32181408881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98304, while the sum is 44.

The spelling of 32181408881 in words is "thirty-two billion, one hundred eighty-one million, four hundred eight thousand, eight hundred eighty-one".