14251666109 has 2 divisors, whose sum is σ = 14251666110. Its totient is φ = 14251666108.

The previous prime is 14251666103. The next prime is 14251666139. The reversal of 14251666109 is 90166615241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12498569209 + 1753096900 = 111797^2 + 41870^2 .

It is a cyclic number.

It is not a de Polignac number, because 14251666109 - 2¹² = 14251662013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14251666103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7125833054 + 7125833055.

It is an arithmetic number, because the mean of its divisors is an integer number (7125833055).

Almost surely, 2^14251666109 is an apocalyptic number.

It is an amenable number.

14251666109 is a deficient number, since it is larger than the sum of its proper divisors (1).

14251666109 is an equidigital number, since it uses as much as digits as its factorization.

14251666109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 14251666109 in words is "fourteen billion, two hundred fifty-one million, six hundred sixty-six thousand, one hundred nine".