33945317329 has 16 divisors (see below), whose sum is σ = 43353668736. Its totient is φ = 25805750400.

The previous prime is 33945317327. The next prime is 33945317359. The reversal of 33945317329 is 92371354933.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 33945317329 - 2¹ = 33945317327 is a prime.

It is not an unprimeable number, because it can be changed into a prime (33945317327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5373042 + ... + 5379355.

It is an arithmetic number, because the mean of its divisors is an integer number (2709604296).

Almost surely, 2^33945317329 is an apocalyptic number.

It is an amenable number.

33945317329 is a deficient number, since it is larger than the sum of its proper divisors (9408351407).

33945317329 is a wasteful number, since it uses less digits than its factorization.

33945317329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10752456.

The product of its digits is 1837080, while the sum is 49.

The spelling of 33945317329 in words is "thirty-three billion, nine hundred forty-five million, three hundred seventeen thousand, three hundred twenty-nine".