21672327288 has 32 divisors (see below), whose sum is σ = 54184435200. Its totient is φ = 7223626848.

The previous prime is 21672327263. The next prime is 21672327317. The reversal of 21672327288 is 88272327612.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 651033 + ... + 683511.

It is an arithmetic number, because the mean of its divisors is an integer number (1693263600).

Almost surely, 2^21672327288 is an apocalyptic number.

It is an amenable number.

21672327288 is an abundant number, since it is smaller than the sum of its proper divisors (32512107912).

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

21672327288 is a wasteful number, since it uses less digits than its factorization.

21672327288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60291 (or 60287 counting only the distinct ones).

The product of its digits is 903168, while the sum is 48.

The spelling of 21672327288 in words is "twenty-one billion, six hundred seventy-two million, three hundred twenty-seven thousand, two hundred eighty-eight".