33444010381 has 2 divisors, whose sum is σ = 33444010382. Its totient is φ = 33444010380.

The previous prime is 33444010363. The next prime is 33444010423. The reversal of 33444010381 is 18301044433.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23114337156 + 10329673225 = 152034^2 + 101635^2 .

It is a cyclic number.

It is not a de Polignac number, because 33444010381 - 2¹¹ = 33444008333 is a prime.

It is a super-2 number, since 2×33444010381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33444010321) 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, 16722005190 + 16722005191.

It is an arithmetic number, because the mean of its divisors is an integer number (16722005191).

Almost surely, 2^33444010381 is an apocalyptic number.

It is an amenable number.

33444010381 is a deficient number, since it is larger than the sum of its proper divisors (1).

33444010381 is an equidigital number, since it uses as much as digits as its factorization.

33444010381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 33444010381 in words is "thirty-three billion, four hundred forty-four million, ten thousand, three hundred eighty-one".