33107538509 has 2 divisors, whose sum is σ = 33107538510. Its totient is φ = 33107538508.

The previous prime is 33107538493. The next prime is 33107538521. The reversal of 33107538509 is 90583570133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26255341225 + 6852197284 = 162035^2 + 82778^2 .

It is a cyclic number.

It is not a de Polignac number, because 33107538509 - 2⁴ = 33107538493 is a prime.

It is a super-2 number, since 2×33107538509² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33107538509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33107538599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16553769254 + 16553769255.

It is an arithmetic number, because the mean of its divisors is an integer number (16553769255).

Almost surely, 2^33107538509 is an apocalyptic number.

It is an amenable number.

33107538509 is a deficient number, since it is larger than the sum of its proper divisors (1).

33107538509 is an equidigital number, since it uses as much as digits as its factorization.

33107538509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 340200, while the sum is 44.

The spelling of 33107538509 in words is "thirty-three billion, one hundred seven million, five hundred thirty-eight thousand, five hundred nine".