33645237049 has 2 divisors, whose sum is σ = 33645237050. Its totient is φ = 33645237048.

The previous prime is 33645237007. The next prime is 33645237053. The reversal of 33645237049 is 94073254633.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33577997049 + 67240000 = 183243^2 + 8200^2 .

It is a cyclic number.

It is not a de Polignac number, because 33645237049 - 2²¹ = 33643139897 is a prime.

It is a super-2 number, since 2×33645237049² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33645238049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16822618524 + 16822618525.

It is an arithmetic number, because the mean of its divisors is an integer number (16822618525).

Almost surely, 2^33645237049 is an apocalyptic number.

It is an amenable number.

33645237049 is a deficient number, since it is larger than the sum of its proper divisors (1).

33645237049 is an equidigital number, since it uses as much as digits as its factorization.

33645237049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 46.

The spelling of 33645237049 in words is "thirty-three billion, six hundred forty-five million, two hundred thirty-seven thousand, forty-nine".