14006123521 has 16 divisors (see below), whose sum is σ = 15197112000. Its totient is φ = 12831507648.

The previous prime is 14006123497. The next prime is 14006123531. The reversal of 14006123521 is 12532160041.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 14006123521 - 2¹⁵ = 14006090753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14006123531) 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, 3381870 + ... + 3386008.

It is an arithmetic number, because the mean of its divisors is an integer number (949819500).

Almost surely, 2^14006123521 is an apocalyptic number.

It is an amenable number.

14006123521 is a deficient number, since it is larger than the sum of its proper divisors (1190988479).

14006123521 is a wasteful number, since it uses less digits than its factorization.

14006123521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6048.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 14006123521 its reverse (12532160041), we get a palindrome (26538283562).

The spelling of 14006123521 in words is "fourteen billion, six million, one hundred twenty-three thousand, five hundred twenty-one".