33947900213 has 4 divisors (see below), whose sum is σ = 33958442988. Its totient is φ = 33937357440.

The previous prime is 33947900183. The next prime is 33947900237. The reversal of 33947900213 is 31200974933.

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 27351536689 + 6596363524 = 165383^2 + 81218^2 .

It is a cyclic number.

It is not a de Polignac number, because 33947900213 - 2¹⁴ = 33947883829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33947900243) 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 3 ways as a sum of consecutive naturals, for example, 5266556 + ... + 5272997.

It is an arithmetic number, because the mean of its divisors is an integer number (8489610747).

Almost surely, 2^33947900213 is an apocalyptic number.

It is an amenable number.

33947900213 is a deficient number, since it is larger than the sum of its proper divisors (10542775).

33947900213 is a wasteful number, since it uses less digits than its factorization.

33947900213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10542774.

The product of its (nonzero) digits is 122472, while the sum is 41.

The spelling of 33947900213 in words is "thirty-three billion, nine hundred forty-seven million, nine hundred thousand, two hundred thirteen".