28145724179 has 2 divisors, whose sum is σ = 28145724180. Its totient is φ = 28145724178.

The previous prime is 28145724133. The next prime is 28145724203. The reversal of 28145724179 is 97142754182.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28145724179 - 2²⁸ = 27877288723 is a prime.

It is not a weakly prime, because it can be changed into another prime (28145724479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14072862089 + 14072862090.

It is an arithmetic number, because the mean of its divisors is an integer number (14072862090).

Almost surely, 2^28145724179 is an apocalyptic number.

28145724179 is a deficient number, since it is larger than the sum of its proper divisors (1).

28145724179 is an equidigital number, since it uses as much as digits as its factorization.

28145724179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1128960, while the sum is 50.

The spelling of 28145724179 in words is "twenty-eight billion, one hundred forty-five million, seven hundred twenty-four thousand, one hundred seventy-nine".