33420206245 has 16 divisors (see below), whose sum is σ = 43927576560. Its totient is φ = 24295742464.

The previous prime is 33420206243. The next prime is 33420206251. The reversal of 33420206245 is 54260202433.

It can be written as a sum of positive squares in 8 ways, for example, as 1094683396 + 32325522849 = 33086^2 + 179793^2 .

It is a cyclic number.

It is not a de Polignac number, because 33420206245 - 2¹ = 33420206243 is a prime.

It is a super-2 number, since 2×33420206245² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33420206243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6776482 + ... + 6781411.

It is an arithmetic number, because the mean of its divisors is an integer number (2745473535).

Almost surely, 2^33420206245 is an apocalyptic number.

It is an amenable number.

33420206245 is a deficient number, since it is larger than the sum of its proper divisors (10507370315).

33420206245 is a wasteful number, since it uses less digits than its factorization.

33420206245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13557944.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 33420206245 its reverse (54260202433), we get a palindrome (87680408678).

The spelling of 33420206245 in words is "thirty-three billion, four hundred twenty million, two hundred six thousand, two hundred forty-five".