33990043423 has 18 divisors (see below), whose sum is σ = 41275292856. Its totient is φ = 27413849664.

The previous prime is 33990043391. The next prime is 33990043433. The reversal of 33990043423 is 32434009933.

It is not a de Polignac number, because 33990043423 - 2⁵ = 33990043391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33990043433) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8290228 + ... + 8294326.

Almost surely, 2^33990043423 is an apocalyptic number.

33990043423 is a deficient number, since it is larger than the sum of its proper divisors (7285249433).

33990043423 is an frugal number, since it uses more digits than its factorization.

33990043423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8239 (or 4123 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 40.

The spelling of 33990043423 in words is "thirty-three billion, nine hundred ninety million, forty-three thousand, four hundred twenty-three".