28014019669 has 2 divisors, whose sum is σ = 28014019670. Its totient is φ = 28014019668.

The previous prime is 28014019651. The next prime is 28014019703. The reversal of 28014019669 is 96691041082.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27876309444 + 137710225 = 166962^2 + 11735^2 .

It is a cyclic number.

It is not a de Polignac number, because 28014019669 - 2¹¹ = 28014017621 is a prime.

It is a super-2 number, since 2×28014019669² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28014019639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14007009834 + 14007009835.

It is an arithmetic number, because the mean of its divisors is an integer number (14007009835).

Almost surely, 2^28014019669 is an apocalyptic number.

It is an amenable number.

28014019669 is a deficient number, since it is larger than the sum of its proper divisors (1).

28014019669 is an equidigital number, since it uses as much as digits as its factorization.

28014019669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 46.

The spelling of 28014019669 in words is "twenty-eight billion, fourteen million, nineteen thousand, six hundred sixty-nine".