32166821668 has 24 divisors (see below), whose sum is σ = 56753101440. Its totient is φ = 15952188000.

The previous prime is 32166821657. The next prime is 32166821669. The reversal of 32166821668 is 86612866123.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (32166821669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172930 + ... + 306982.

It is an arithmetic number, because the mean of its divisors is an integer number (2364712560).

Almost surely, 2^32166821668 is an apocalyptic number.

It is an amenable number.

32166821668 is a deficient number, since it is larger than the sum of its proper divisors (24586279772).

32166821668 is a wasteful number, since it uses less digits than its factorization.

32166821668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134547 (or 134545 counting only the distinct ones).

The product of its digits is 995328, while the sum is 49.

The spelling of 32166821668 in words is "thirty-two billion, one hundred sixty-six million, eight hundred twenty-one thousand, six hundred sixty-eight".