33513544450213 has 4 divisors (see below), whose sum is σ = 33516797886828. Its totient is φ = 33510291013600.

The previous prime is 33513544450163. The next prime is 33513544450223. The reversal of 33513544450213 is 31205444531533.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23141035323169 + 10372509127044 = 4810513^2 + 3220638^2 .

It is a cyclic number.

It is not a de Polignac number, because 33513544450213 - 2²¹ = 33513542353061 is a prime.

It is a super-2 number, since 2×33513544450213² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33513544450213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33513544450223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1626702856 + ... + 1626723457.

It is an arithmetic number, because the mean of its divisors is an integer number (8379199471707).

Almost surely, 2^{33513544450213} is an apocalyptic number.

It is an amenable number.

33513544450213 is a deficient number, since it is larger than the sum of its proper divisors (3253436615).

33513544450213 is a wasteful number, since it uses less digits than its factorization.

33513544450213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3253436614.

The product of its (nonzero) digits is 1296000, while the sum is 43.

Adding to 33513544450213 its reverse (31205444531533), we get a palindrome (64718988981746).

The spelling of 33513544450213 in words is "thirty-three trillion, five hundred thirteen billion, five hundred forty-four million, four hundred fifty thousand, two hundred thirteen".