20398567396017 has 16 divisors (see below), whose sum is σ = 27653117597120. Its totient is φ = 13371678763200.

The previous prime is 20398567396013. The next prime is 20398567396037. The reversal of 20398567396017 is 71069376589302.

It is not a de Polignac number, because 20398567396017 - 2² = 20398567396013 is a prime.

It is a super-2 number, since 2×20398567396017² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20398567396013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17908534 + ... + 19013487.

It is an arithmetic number, because the mean of its divisors is an integer number (1728319849820).

Almost surely, 2^{20398567396017} is an apocalyptic number.

It is an amenable number.

20398567396017 is a deficient number, since it is larger than the sum of its proper divisors (7254550201103).

20398567396017 is a wasteful number, since it uses less digits than its factorization.

20398567396017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36925104.

The product of its (nonzero) digits is 102876480, while the sum is 66.

The spelling of 20398567396017 in words is "twenty trillion, three hundred ninety-eight billion, five hundred sixty-seven million, three hundred ninety-six thousand, seventeen".