33340370681 has 2 divisors, whose sum is σ = 33340370682. Its totient is φ = 33340370680.

The previous prime is 33340370647. The next prime is 33340370689. The reversal of 33340370681 is 18607304333.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26327983081 + 7012387600 = 162259^2 + 83740^2 .

It is a cyclic number.

It is not a de Polignac number, because 33340370681 - 2¹⁴ = 33340354297 is a prime.

It is a super-2 number, since 2×33340370681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33340370689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16670185340 + 16670185341.

It is an arithmetic number, because the mean of its divisors is an integer number (16670185341).

Almost surely, 2^33340370681 is an apocalyptic number.

It is an amenable number.

33340370681 is a deficient number, since it is larger than the sum of its proper divisors (1).

33340370681 is an equidigital number, since it uses as much as digits as its factorization.

33340370681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 38.

The spelling of 33340370681 in words is "thirty-three billion, three hundred forty million, three hundred seventy thousand, six hundred eighty-one".