33500894681 has 2 divisors, whose sum is σ = 33500894682. Its totient is φ = 33500894680.

The previous prime is 33500894659. The next prime is 33500894729. The reversal of 33500894681 is 18649800533.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20780664025 + 12720230656 = 144155^2 + 112784^2 .

It is a cyclic number.

It is not a de Polignac number, because 33500894681 - 2⁶ = 33500894617 is a prime.

It is a super-2 number, since 2×33500894681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33500894281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16750447340 + 16750447341.

It is an arithmetic number, because the mean of its divisors is an integer number (16750447341).

Almost surely, 2^33500894681 is an apocalyptic number.

It is an amenable number.

33500894681 is a deficient number, since it is larger than the sum of its proper divisors (1).

33500894681 is an equidigital number, since it uses as much as digits as its factorization.

33500894681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 33500894681 in words is "thirty-three billion, five hundred million, eight hundred ninety-four thousand, six hundred eighty-one".