28165144507 has 2 divisors, whose sum is σ = 28165144508. Its totient is φ = 28165144506.

The previous prime is 28165144421. The next prime is 28165144537. The reversal of 28165144507 is 70544156182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28165144507 - 2¹⁹ = 28164620219 is a prime.

It is not a weakly prime, because it can be changed into another prime (28165144537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14082572253 + 14082572254.

It is an arithmetic number, because the mean of its divisors is an integer number (14082572254).

Almost surely, 2^28165144507 is an apocalyptic number.

28165144507 is a deficient number, since it is larger than the sum of its proper divisors (1).

28165144507 is an equidigital number, since it uses as much as digits as its factorization.

28165144507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 28165144507 in words is "twenty-eight billion, one hundred sixty-five million, one hundred forty-four thousand, five hundred seven".