16014454021 has 4 divisors (see below), whose sum is σ = 16531049344. Its totient is φ = 15497858700.

The previous prime is 16014453991. The next prime is 16014454039. The reversal of 16014454021 is 12045441061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16014454021 - 2⁷ = 16014453893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16014452021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258297615 + ... + 258297676.

It is an arithmetic number, because the mean of its divisors is an integer number (4132762336).

Almost surely, 2^16014454021 is an apocalyptic number.

It is an amenable number.

16014454021 is a deficient number, since it is larger than the sum of its proper divisors (516595323).

16014454021 is an equidigital number, since it uses as much as digits as its factorization.

16014454021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516595322.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 16014454021 its reverse (12045441061), we get a palindrome (28059895082).

The spelling of 16014454021 in words is "sixteen billion, fourteen million, four hundred fifty-four thousand, twenty-one".