85243812299 has 2 divisors, whose sum is σ = 85243812300. Its totient is φ = 85243812298.

The previous prime is 85243812281. The next prime is 85243812319. The reversal of 85243812299 is 99221834258.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85243812299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85243812299.

It is not a weakly prime, because it can be changed into another prime (85243812499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42621906149 + 42621906150.

It is an arithmetic number, because the mean of its divisors is an integer number (42621906150).

Almost surely, 2^85243812299 is an apocalyptic number.

85243812299 is a deficient number, since it is larger than the sum of its proper divisors (1).

85243812299 is an equidigital number, since it uses as much as digits as its factorization.

85243812299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 53.

The spelling of 85243812299 in words is "eighty-five billion, two hundred forty-three million, eight hundred twelve thousand, two hundred ninety-nine".