33723740868 has 12 divisors (see below), whose sum is σ = 78688728720. Its totient is φ = 11241246952.

The previous prime is 33723740867. The next prime is 33723740881. The reversal of 33723740868 is 86804732733.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×33723740868² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33723740868.

It is not an unprimeable number, because it can be changed into a prime (33723740863) 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 3 ways as a sum of consecutive naturals, for example, 1405155858 + ... + 1405155881.

It is an arithmetic number, because the mean of its divisors is an integer number (6557394060).

Almost surely, 2^33723740868 is an apocalyptic number.

It is an amenable number.

33723740868 is an abundant number, since it is smaller than the sum of its proper divisors (44964987852).

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

33723740868 is a wasteful number, since it uses less digits than its factorization.

33723740868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2810311746 (or 2810311744 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 51.

The spelling of 33723740868 in words is "thirty-three billion, seven hundred twenty-three million, seven hundred forty thousand, eight hundred sixty-eight".