28341778873 has 2 divisors, whose sum is σ = 28341778874. Its totient is φ = 28341778872.

The previous prime is 28341778841. The next prime is 28341778903. The reversal of 28341778873 is 37887714382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28219632169 + 122146704 = 167987^2 + 11052^2 .

It is a cyclic number.

It is not a de Polignac number, because 28341778873 - 2⁵ = 28341778841 is a prime.

It is not a weakly prime, because it can be changed into another prime (28341778813) 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, 14170889436 + 14170889437.

It is an arithmetic number, because the mean of its divisors is an integer number (14170889437).

Almost surely, 2^28341778873 is an apocalyptic number.

It is an amenable number.

28341778873 is a deficient number, since it is larger than the sum of its proper divisors (1).

28341778873 is an equidigital number, since it uses as much as digits as its factorization.

28341778873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12644352, while the sum is 58.

The spelling of 28341778873 in words is "twenty-eight billion, three hundred forty-one million, seven hundred seventy-eight thousand, eight hundred seventy-three".