33159621768 has 128 divisors (see below), whose sum is σ = 102833848320. Its totient is φ = 8676460800.

The previous prime is 33159621767. The next prime is 33159621809. The reversal of 33159621768 is 86712695133.

It is a self number, because there is not a number n which added to its sum of digits gives 33159621768.

It is not an unprimeable number, because it can be changed into a prime (33159621767) 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 31 ways as a sum of consecutive naturals, for example, 217593 + ... + 337143.

It is an arithmetic number, because the mean of its divisors is an integer number (803389440).

Almost surely, 2^33159621768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33159621768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51416924160).

33159621768 is an abundant number, since it is smaller than the sum of its proper divisors (69674226552).

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

33159621768 is a wasteful number, since it uses less digits than its factorization.

33159621768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119707 (or 119703 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 51.

The spelling of 33159621768 in words is "thirty-three billion, one hundred fifty-nine million, six hundred twenty-one thousand, seven hundred sixty-eight".