21714899285 has 8 divisors (see below), whose sum is σ = 26077977816. Its totient is φ = 17358520320.

The previous prime is 21714899273. The next prime is 21714899329. The reversal of 21714899285 is 58299841712.

It can be written as a sum of positive squares in 4 ways, for example, as 14492788996 + 7222110289 = 120386^2 + 84983^2 .

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

It is not a de Polignac number, because 21714899285 - 2⁸ = 21714899029 is a prime.

It is a super-2 number, since 2×21714899285² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21714899285.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1667756 + ... + 1680725.

It is an arithmetic number, because the mean of its divisors is an integer number (3259747227).

Almost surely, 2^21714899285 is an apocalyptic number.

It is an amenable number.

21714899285 is a deficient number, since it is larger than the sum of its proper divisors (4363078531).

21714899285 is a wasteful number, since it uses less digits than its factorization.

21714899285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349783.

The product of its digits is 2903040, while the sum is 56.

The spelling of 21714899285 in words is "twenty-one billion, seven hundred fourteen million, eight hundred ninety-nine thousand, two hundred eighty-five".