33281664028 has 12 divisors (see below), whose sum is σ = 58248615600. Its totient is φ = 16639202432.

The previous prime is 33281664007. The next prime is 33281664061. The reversal of 33281664028 is 82046618233.

It is a super-2 number, since 2×33281664028² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360853 + ... + 443596.

It is an arithmetic number, because the mean of its divisors is an integer number (4854051300).

Almost surely, 2^33281664028 is an apocalyptic number.

It is an amenable number.

33281664028 is a deficient number, since it is larger than the sum of its proper divisors (24966951572).

33281664028 is a wasteful number, since it uses less digits than its factorization.

33281664028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814796 (or 814794 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 43.

The spelling of 33281664028 in words is "thirty-three billion, two hundred eighty-one million, six hundred sixty-four thousand, twenty-eight".