33850913081 has 2 divisors, whose sum is σ = 33850913082. Its totient is φ = 33850913080.

The previous prime is 33850913029. The next prime is 33850913149. The reversal of 33850913081 is 18031905833.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33145479481 + 705433600 = 182059^2 + 26560^2 .

It is an emirp because it is prime and its reverse (18031905833) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33850913081 - 2²² = 33846718777 is a prime.

It is a super-2 number, since 2×33850913081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33850913981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16925456540 + 16925456541.

It is an arithmetic number, because the mean of its divisors is an integer number (16925456541).

Almost surely, 2^33850913081 is an apocalyptic number.

It is an amenable number.

33850913081 is a deficient number, since it is larger than the sum of its proper divisors (1).

33850913081 is an equidigital number, since it uses as much as digits as its factorization.

33850913081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 33850913081 in words is "thirty-three billion, eight hundred fifty million, nine hundred thirteen thousand, eighty-one".