21473888162 has 8 divisors (see below), whose sum is σ = 32267443500. Its totient is φ = 10718073664.

The previous prime is 21473888143. The next prime is 21473888221. The reversal of 21473888162 is 26188837412.

It can be written as a sum of positive squares in 2 ways, for example, as 15277207201 + 6196680961 = 123601^2 + 78719^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21473888162² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21473888162.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9433787 + ... + 9436062.

Almost surely, 2^21473888162 is an apocalyptic number.

21473888162 is a deficient number, since it is larger than the sum of its proper divisors (10793555338).

21473888162 is a wasteful number, since it uses less digits than its factorization.

21473888162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18870420.

The product of its digits is 1032192, while the sum is 50.

The spelling of 21473888162 in words is "twenty-one billion, four hundred seventy-three million, eight hundred eighty-eight thousand, one hundred sixty-two".