33940645373 has 2 divisors, whose sum is σ = 33940645374. Its totient is φ = 33940645372.

The previous prime is 33940645363. The next prime is 33940645411. The reversal of 33940645373 is 37354604933.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33548684569 + 391960804 = 183163^2 + 19798^2 .

It is an emirp because it is prime and its reverse (37354604933) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33940645373 - 2⁴ = 33940645357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33940645363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16970322686 + 16970322687.

It is an arithmetic number, because the mean of its divisors is an integer number (16970322687).

Almost surely, 2^33940645373 is an apocalyptic number.

It is an amenable number.

33940645373 is a deficient number, since it is larger than the sum of its proper divisors (1).

33940645373 is an equidigital number, since it uses as much as digits as its factorization.

33940645373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2449440, while the sum is 47.

The spelling of 33940645373 in words is "thirty-three billion, nine hundred forty million, six hundred forty-five thousand, three hundred seventy-three".