32871132721 has 32 divisors (see below), whose sum is σ = 38806732800. Its totient is φ = 27259049664.

The previous prime is 32871132719. The next prime is 32871132743. The reversal of 32871132721 is 12723117823.

It is not a de Polignac number, because 32871132721 - 2¹ = 32871132719 is a prime.

It is a super-2 number, since 2×32871132721² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32871132781) 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 31 ways as a sum of consecutive naturals, for example, 20764296 + ... + 20765878.

It is an arithmetic number, because the mean of its divisors is an integer number (1212710400).

Almost surely, 2^32871132721 is an apocalyptic number.

It is an amenable number.

32871132721 is a deficient number, since it is larger than the sum of its proper divisors (5935600079).

32871132721 is a wasteful number, since it uses less digits than its factorization.

32871132721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245.

The product of its digits is 28224, while the sum is 37.

The spelling of 32871132721 in words is "thirty-two billion, eight hundred seventy-one million, one hundred thirty-two thousand, seven hundred twenty-one".