33423725816 has 32 divisors (see below), whose sum is σ = 71042336400. Its totient is φ = 14614421760.

The previous prime is 33423725767. The next prime is 33423725827. The reversal of 33423725816 is 61852732433.

It is a happy number.

It is a super-2 number, since 2×33423725816² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8455445 + ... + 8459396.

Almost surely, 2^33423725816 is an apocalyptic number.

It is an amenable number.

33423725816 is an abundant number, since it is smaller than the sum of its proper divisors (37618610584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33423725816 is a wasteful number, since it uses less digits than its factorization.

33423725816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16914879 (or 16914875 counting only the distinct ones).

The product of its digits is 725760, while the sum is 44.

The spelling of 33423725816 in words is "thirty-three billion, four hundred twenty-three million, seven hundred twenty-five thousand, eight hundred sixteen".