28850799811321 has 2 divisors, whose sum is σ = 28850799811322. Its totient is φ = 28850799811320.

The previous prime is 28850799811277. The next prime is 28850799811343. The reversal of 28850799811321 is 12311899705882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28808338675600 + 42461135721 = 5367340^2 + 206061^2 .

It is a cyclic number.

It is not a de Polignac number, because 28850799811321 - 2⁷ = 28850799811193 is a prime.

It is not a weakly prime, because it can be changed into another prime (28850799811391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14425399905660 + 14425399905661.

It is an arithmetic number, because the mean of its divisors is an integer number (14425399905661).

Almost surely, 2^{28850799811321} is an apocalyptic number.

It is an amenable number.

28850799811321 is a deficient number, since it is larger than the sum of its proper divisors (1).

28850799811321 is an equidigital number, since it uses as much as digits as its factorization.

28850799811321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17418240, while the sum is 64.

The spelling of 28850799811321 in words is "twenty-eight trillion, eight hundred fifty billion, seven hundred ninety-nine million, eight hundred eleven thousand, three hundred twenty-one".