33155664864 has 96 divisors (see below), whose sum is σ = 99495599616. Its totient is φ = 9470323200.

The previous prime is 33155664827. The next prime is 33155664869. The reversal of 33155664864 is 46846655133.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×33155664864² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33155664869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4095829 + ... + 4103915.

It is an arithmetic number, because the mean of its divisors is an integer number (1036412496).

Almost surely, 2^33155664864 is an apocalyptic number.

It is an amenable number.

33155664864 is an abundant number, since it is smaller than the sum of its proper divisors (66339934752).

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

33155664864 is a wasteful number, since it uses less digits than its factorization.

33155664864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14208 (or 14200 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 51.

The spelling of 33155664864 in words is "thirty-three billion, one hundred fifty-five million, six hundred sixty-four thousand, eight hundred sixty-four".