33441223661 has 2 divisors, whose sum is σ = 33441223662. Its totient is φ = 33441223660.

The previous prime is 33441223649. The next prime is 33441223663. The reversal of 33441223661 is 16632214433.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31666202500 + 1775021161 = 177950^2 + 42131^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33441223661 is a prime.

It is a super-2 number, since 2×33441223661² (a number of 22 digits) contains 22 as substring.

Together with 33441223663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33441223663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16720611830 + 16720611831.

It is an arithmetic number, because the mean of its divisors is an integer number (16720611831).

Almost surely, 2^33441223661 is an apocalyptic number.

It is an amenable number.

33441223661 is a deficient number, since it is larger than the sum of its proper divisors (1).

33441223661 is an equidigital number, since it uses as much as digits as its factorization.

33441223661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 35.

The spelling of 33441223661 in words is "thirty-three billion, four hundred forty-one million, two hundred twenty-three thousand, six hundred sixty-one".