33733340681 has 2 divisors, whose sum is σ = 33733340682. Its totient is φ = 33733340680.

The previous prime is 33733340651. The next prime is 33733340717. The reversal of 33733340681 is 18604333733.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20882851081 + 12850489600 = 144509^2 + 113360^2 .

It is a cyclic number.

It is not a de Polignac number, because 33733340681 - 2⁶ = 33733340617 is a prime.

It is a super-2 number, since 2×33733340681² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (33733340651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16866670340 + 16866670341.

It is an arithmetic number, because the mean of its divisors is an integer number (16866670341).

Almost surely, 2^33733340681 is an apocalyptic number.

It is an amenable number.

33733340681 is a deficient number, since it is larger than the sum of its proper divisors (1).

33733340681 is an equidigital number, since it uses as much as digits as its factorization.

33733340681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 41.

The spelling of 33733340681 in words is "thirty-three billion, seven hundred thirty-three million, three hundred forty thousand, six hundred eighty-one".