32444444381 has 2 divisors, whose sum is σ = 32444444382. Its totient is φ = 32444444380.

The previous prime is 32444444363. The next prime is 32444444447. The reversal of 32444444381 is 18344444423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31529684356 + 914760025 = 177566^2 + 30245^2 .

It is a cyclic number.

It is not a de Polignac number, because 32444444381 - 2⁶ = 32444444317 is a prime.

It is a super-2 number, since 2×32444444381² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32444444311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16222222190 + 16222222191.

It is an arithmetic number, because the mean of its divisors is an integer number (16222222191).

Almost surely, 2^32444444381 is an apocalyptic number.

It is an amenable number.

32444444381 is a deficient number, since it is larger than the sum of its proper divisors (1).

32444444381 is an equidigital number, since it uses as much as digits as its factorization.

32444444381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 589824, while the sum is 41.

The spelling of 32444444381 in words is "thirty-two billion, four hundred forty-four million, four hundred forty-four thousand, three hundred eighty-one".