14398163521 has 16 divisors (see below), whose sum is σ = 16738923520. Its totient is φ = 12129218640.

The previous prime is 14398163509. The next prime is 14398163537. The reversal of 14398163521 is 12536189341.

It is not a de Polignac number, because 14398163521 - 2⁵ = 14398163489 is a prime.

It is a super-2 number, since 2×14398163521² (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 (14398163551) 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, 170926 + ... + 240856.

It is an arithmetic number, because the mean of its divisors is an integer number (1046182720).

Almost surely, 2^14398163521 is an apocalyptic number.

It is an amenable number.

14398163521 is a deficient number, since it is larger than the sum of its proper divisors (2340759999).

14398163521 is an equidigital number, since it uses as much as digits as its factorization.

14398163521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70444.

The product of its digits is 155520, while the sum is 43.

The spelling of 14398163521 in words is "fourteen billion, three hundred ninety-eight million, one hundred sixty-three thousand, five hundred twenty-one".