21326272017 has 8 divisors (see below), whose sum is σ = 28435945824. Its totient is φ = 14217056448.

The previous prime is 21326272007. The next prime is 21326272021. The reversal of 21326272017 is 71027262312.

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

It is not a de Polignac number, because 21326272017 - 2⁴ = 21326272001 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (21326272007) 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, 14953 + ... + 207065.

It is an arithmetic number, because the mean of its divisors is an integer number (3554493228).

Almost surely, 2^21326272017 is an apocalyptic number.

It is an amenable number.

21326272017 is a deficient number, since it is larger than the sum of its proper divisors (7109673807).

21326272017 is a wasteful number, since it uses less digits than its factorization.

21326272017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229119.

The product of its (nonzero) digits is 14112, while the sum is 33.

The spelling of 21326272017 in words is "twenty-one billion, three hundred twenty-six million, two hundred seventy-two thousand, seventeen".