28310842691 has 2 divisors, whose sum is σ = 28310842692. Its totient is φ = 28310842690.

The previous prime is 28310842643. The next prime is 28310842727. The reversal of 28310842691 is 19624801382.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28310842691 - 2¹⁴ = 28310826307 is a prime.

It is not a weakly prime, because it can be changed into another prime (28310842601) 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, 14155421345 + 14155421346.

It is an arithmetic number, because the mean of its divisors is an integer number (14155421346).

Almost surely, 2^28310842691 is an apocalyptic number.

28310842691 is a deficient number, since it is larger than the sum of its proper divisors (1).

28310842691 is an equidigital number, since it uses as much as digits as its factorization.

28310842691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 28310842691 in words is "twenty-eight billion, three hundred ten million, eight hundred forty-two thousand, six hundred ninety-one".