33391481888 has 18 divisors (see below), whose sum is σ = 65741515119. Its totient is φ = 16695224096.

The previous prime is 33391481869. The next prime is 33391481891. The reversal of 33391481888 is 88818419333.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 16695740944 + 16695740944 = 129212^2 + 129212^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=129212.

It is a super-2 number, since 2×33391481888² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1017545 + ... + 1049847.

Almost surely, 2^33391481888 is an apocalyptic number.

It is an amenable number.

33391481888 is a deficient number, since it is larger than the sum of its proper divisors (32350033231).

33391481888 is an frugal number, since it uses more digits than its factorization.

33391481888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64616 (or 32305 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 56.

The spelling of 33391481888 in words is "thirty-three billion, three hundred ninety-one million, four hundred eighty-one thousand, eight hundred eighty-eight".