33996506521 has 2 divisors, whose sum is σ = 33996506522. Its totient is φ = 33996506520.

The previous prime is 33996506513. The next prime is 33996506573. The reversal of 33996506521 is 12560569933.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22582575625 + 11413930896 = 150275^2 + 106836^2 .

It is a cyclic number.

It is not a de Polignac number, because 33996506521 - 2³ = 33996506513 is a prime.

It is not a weakly prime, because it can be changed into another prime (33996506501) 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, 16998253260 + 16998253261.

It is an arithmetic number, because the mean of its divisors is an integer number (16998253261).

Almost surely, 2^33996506521 is an apocalyptic number.

It is an amenable number.

33996506521 is a deficient number, since it is larger than the sum of its proper divisors (1).

33996506521 is an equidigital number, since it uses as much as digits as its factorization.

33996506521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1312200, while the sum is 49.

The spelling of 33996506521 in words is "thirty-three billion, nine hundred ninety-six million, five hundred six thousand, five hundred twenty-one".