14644865113321 has 3 divisors (see below), whose sum is σ = 14644868940183. Its totient is φ = 14644861286460.

The previous prime is 14644865113309. The next prime is 14644865113349. The reversal of 14644865113321 is 12331156844641.

The square root of 14644865113321 is 3826861.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 730920693721 + 13913944419600 = 854939^2 + 3730140^2 .

It is not a de Polignac number, because 14644865113321 - 2¹¹ = 14644865111273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14644865110321) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1913431 + ... + 5740291.

It is an arithmetic number, because the mean of its divisors is an integer number (4881622980061).

Almost surely, 2^{14644865113321} is an apocalyptic number.

14644865113321 is the 3826861-st square number.

14644865113321 is the 1913431-st centered octagonal number.

It is an amenable number.

14644865113321 is a deficient number, since it is larger than the sum of its proper divisors (3826862).

14644865113321 is an frugal number, since it uses more digits than its factorization.

14644865113321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7653722 (or 3826861 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 49.

Multiplying 14644865113321 by its sum of digits (49), we get a square (717598390552729 = 26788027²).

The spelling of 14644865113321 in words is "fourteen trillion, six hundred forty-four billion, eight hundred sixty-five million, one hundred thirteen thousand, three hundred twenty-one".