14253816621 has 16 divisors (see below), whose sum is σ = 20773581120. Its totient is φ = 8621694720.

The previous prime is 14253816541. The next prime is 14253816623. The reversal of 14253816621 is 12661835241.

It is not a de Polignac number, because 14253816621 - 2²³ = 14245428013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 14253816621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14253816623) 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, 407500 + ... + 441093.

It is an arithmetic number, because the mean of its divisors is an integer number (1298348820).

Almost surely, 2^14253816621 is an apocalyptic number.

14253816621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

14253816621 is a deficient number, since it is larger than the sum of its proper divisors (6519764499).

14253816621 is a wasteful number, since it uses less digits than its factorization.

14253816621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849116.

The product of its digits is 69120, while the sum is 39.

The spelling of 14253816621 in words is "fourteen billion, two hundred fifty-three million, eight hundred sixteen thousand, six hundred twenty-one".