28181134259 has 2 divisors, whose sum is σ = 28181134260. Its totient is φ = 28181134258.

The previous prime is 28181134187. The next prime is 28181134291. The reversal of 28181134259 is 95243118182.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28181134259 is a prime.

It is a super-3 number, since 3×28181134259³ (a number of 32 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (28181134559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14090567129 + 14090567130.

It is an arithmetic number, because the mean of its divisors is an integer number (14090567130).

Almost surely, 2^28181134259 is an apocalyptic number.

28181134259 is a deficient number, since it is larger than the sum of its proper divisors (1).

28181134259 is an equidigital number, since it uses as much as digits as its factorization.

28181134259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 44.

The spelling of 28181134259 in words is "twenty-eight billion, one hundred eighty-one million, one hundred thirty-four thousand, two hundred fifty-nine".