28310842643 has 2 divisors, whose sum is σ = 28310842644. Its totient is φ = 28310842642.

The previous prime is 28310842619. The next prime is 28310842691. The reversal of 28310842643 is 34624801382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28310842643 - 2²⁰ = 28309794067 is a prime.

It is a super-2 number, since 2×28310842643² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28310842643.

It is not a weakly prime, because it can be changed into another prime (28310842603) 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, 14155421321 + 14155421322.

It is an arithmetic number, because the mean of its divisors is an integer number (14155421322).

Almost surely, 2^28310842643 is an apocalyptic number.

28310842643 is a deficient number, since it is larger than the sum of its proper divisors (1).

28310842643 is an equidigital number, since it uses as much as digits as its factorization.

28310842643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 221184, while the sum is 41.

The spelling of 28310842643 in words is "twenty-eight billion, three hundred ten million, eight hundred forty-two thousand, six hundred forty-three".