21473735267 has 8 divisors (see below), whose sum is σ = 22974489360. Its totient is φ = 20010036960.

The previous prime is 21473735189. The next prime is 21473735273. The reversal of 21473735267 is 76253737412.

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

It is a de Polignac number, because none of the positive numbers 2^k-21473735267 is a prime.

It is a super-2 number, since 2×21473735267² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21473738267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9262748 + ... + 9265065.

It is an arithmetic number, because the mean of its divisors is an integer number (2871811170).

Almost surely, 2^21473735267 is an apocalyptic number.

21473735267 is a deficient number, since it is larger than the sum of its proper divisors (1500754093).

21473735267 is a wasteful number, since it uses less digits than its factorization.

21473735267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18527893.

The product of its digits is 1481760, while the sum is 47.

The spelling of 21473735267 in words is "twenty-one billion, four hundred seventy-three million, seven hundred thirty-five thousand, two hundred sixty-seven".