33638074423 has 6 divisors (see below), whose sum is σ = 34198562112. Its totient is φ = 33086626920.

The previous prime is 33638074387. The next prime is 33638074451. The reversal of 33638074423 is 32447083633.

It is a de Polignac number, because none of the positive numbers 2^k-33638074423 is a prime.

It is a super-2 number, since 2×33638074423² (a number of 22 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 33638074423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33638074123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4516311 + ... + 4523752.

It is an arithmetic number, because the mean of its divisors is an integer number (5699760352).

Almost surely, 2^33638074423 is an apocalyptic number.

33638074423 is a deficient number, since it is larger than the sum of its proper divisors (560487689).

33638074423 is an frugal number, since it uses more digits than its factorization.

33638074423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9040185 (or 9040124 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 43.

The spelling of 33638074423 in words is "thirty-three billion, six hundred thirty-eight million, seventy-four thousand, four hundred twenty-three".