33420699913 has 2 divisors, whose sum is σ = 33420699914. Its totient is φ = 33420699912.

The previous prime is 33420699901. The next prime is 33420699997. The reversal of 33420699913 is 31999602433.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29394416704 + 4026283209 = 171448^2 + 63453^2 .

It is an emirp because it is prime and its reverse (31999602433) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33420699913 - 2³³ = 24830765321 is a prime.

It is a super-2 number, since 2×33420699913² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33420699413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16710349956 + 16710349957.

It is an arithmetic number, because the mean of its divisors is an integer number (16710349957).

Almost surely, 2^33420699913 is an apocalyptic number.

It is an amenable number.

33420699913 is a deficient number, since it is larger than the sum of its proper divisors (1).

33420699913 is an equidigital number, since it uses as much as digits as its factorization.

33420699913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 944784, while the sum is 49.

The spelling of 33420699913 in words is "thirty-three billion, four hundred twenty million, six hundred ninety-nine thousand, nine hundred thirteen".