21726871295 has 8 divisors (see below), whose sum is σ = 26076406896. Its totient is φ = 17378722816.

The previous prime is 21726871259. The next prime is 21726871297. The reversal of 21726871295 is 59217862712.

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

It is a cyclic number.

It is not a de Polignac number, because 21726871295 - 2²⁰ = 21725822719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21726871297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312002 + ... + 375231.

It is an arithmetic number, because the mean of its divisors is an integer number (3259550862).

Almost surely, 2^21726871295 is an apocalyptic number.

21726871295 is a deficient number, since it is larger than the sum of its proper divisors (4349535601).

21726871295 is an equidigital number, since it uses as much as digits as its factorization.

21726871295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693561.

The product of its digits is 846720, while the sum is 50.

The spelling of 21726871295 in words is "twenty-one billion, seven hundred twenty-six million, eight hundred seventy-one thousand, two hundred ninety-five".