33140235281 has 2 divisors, whose sum is σ = 33140235282. Its totient is φ = 33140235280.

The previous prime is 33140235263. The next prime is 33140235329. The reversal of 33140235281 is 18253204133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17161000000 + 15979235281 = 131000^2 + 126409^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33140235281 is a prime.

It is a super-2 number, since 2×33140235281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33140235181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16570117640 + 16570117641.

It is an arithmetic number, because the mean of its divisors is an integer number (16570117641).

Almost surely, 2^33140235281 is an apocalyptic number.

It is an amenable number.

33140235281 is a deficient number, since it is larger than the sum of its proper divisors (1).

33140235281 is an equidigital number, since it uses as much as digits as its factorization.

33140235281 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 32.

The spelling of 33140235281 in words is "thirty-three billion, one hundred forty million, two hundred thirty-five thousand, two hundred eighty-one".