33400445213 has 2 divisors, whose sum is σ = 33400445214. Its totient is φ = 33400445212.

The previous prime is 33400445191. The next prime is 33400445251. The reversal of 33400445213 is 31254400433.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32299997284 + 1100447929 = 179722^2 + 33173^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33400445213 is a prime.

It is a super-2 number, since 2×33400445213² (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 (33400495213) 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, 16700222606 + 16700222607.

It is an arithmetic number, because the mean of its divisors is an integer number (16700222607).

Almost surely, 2^33400445213 is an apocalyptic number.

It is an amenable number.

33400445213 is a deficient number, since it is larger than the sum of its proper divisors (1).

33400445213 is an equidigital number, since it uses as much as digits as its factorization.

33400445213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 33400445213 its reverse (31254400433), we get a palindrome (64654845646).

The spelling of 33400445213 in words is "thirty-three billion, four hundred million, four hundred forty-five thousand, two hundred thirteen".