32866349783920 has 20 divisors (see below), whose sum is σ = 76414263247800. Its totient is φ = 13146539913536.

The previous prime is 32866349783881. The next prime is 32866349783921. The reversal of 32866349783920 is 2938794366823.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 32866349783920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32866349783921) by changing a digit.

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, 205414686070 + ... + 205414686229.

It is an arithmetic number, because the mean of its divisors is an integer number (3820713162390).

Almost surely, 2^{32866349783920} is an apocalyptic number.

It is an amenable number.

32866349783920 is an abundant number, since it is smaller than the sum of its proper divisors (43547913463880).

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

32866349783920 is a wasteful number, since it uses less digits than its factorization.

32866349783920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410829372312 (or 410829372306 counting only the distinct ones).

The product of its (nonzero) digits is 564350976, while the sum is 70.

The spelling of 32866349783920 in words is "thirty-two trillion, eight hundred sixty-six billion, three hundred forty-nine million, seven hundred eighty-three thousand, nine hundred twenty".