32891018680 has 32 divisors (see below), whose sum is σ = 79697469600. Its totient is φ = 12144375936.

The previous prime is 32891018663. The next prime is 32891018681. The reversal of 32891018680 is 8681019823.

It is a self number, because there is not a number n which added to its sum of digits gives 32891018680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32891018681) 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 7 ways as a sum of consecutive naturals, for example, 31625460 + ... + 31626499.

It is an arithmetic number, because the mean of its divisors is an integer number (2490545925).

Almost surely, 2^32891018680 is an apocalyptic number.

It is an amenable number.

32891018680 is an abundant number, since it is smaller than the sum of its proper divisors (46806450920).

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

32891018680 is a wasteful number, since it uses less digits than its factorization.

32891018680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63251983 (or 63251979 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 46.

The spelling of 32891018680 in words is "thirty-two billion, eight hundred ninety-one million, eighteen thousand, six hundred eighty".