14540440021 has 2 divisors, whose sum is σ = 14540440022. Its totient is φ = 14540440020.

The previous prime is 14540439967. The next prime is 14540440027. The reversal of 14540440021 is 12004404541.

14540440021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7290768996 + 7249671025 = 85386^2 + 85145^2 .

It is a cyclic number.

It is not a de Polignac number, because 14540440021 - 2¹⁷ = 14540308949 is a prime.

It is a super-2 number, since 2×14540440021² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14540440027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7270220010 + 7270220011.

It is an arithmetic number, because the mean of its divisors is an integer number (7270220011).

Almost surely, 2^14540440021 is an apocalyptic number.

It is an amenable number.

14540440021 is a deficient number, since it is larger than the sum of its proper divisors (1).

14540440021 is an equidigital number, since it uses as much as digits as its factorization.

14540440021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 14540440021 its reverse (12004404541), we get a palindrome (26544844562).

The spelling of 14540440021 in words is "fourteen billion, five hundred forty million, four hundred forty thousand, twenty-one".