32721872564 has 12 divisors (see below), whose sum is σ = 57273721344. Its totient is φ = 16357952184.

The previous prime is 32721872563. The next prime is 32721872611. The reversal of 32721872564 is 46527812723.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32721872563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721262 + ... + 765285.

It is an arithmetic number, because the mean of its divisors is an integer number (4772810112).

Almost surely, 2^32721872564 is an apocalyptic number.

It is an amenable number.

32721872564 is a deficient number, since it is larger than the sum of its proper divisors (24551848780).

32721872564 is a wasteful number, since it uses less digits than its factorization.

32721872564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492054 (or 1492052 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 47.

The spelling of 32721872564 in words is "thirty-two billion, seven hundred twenty-one million, eight hundred seventy-two thousand, five hundred sixty-four".