81600242424299 has 2 divisors, whose sum is σ = 81600242424300. Its totient is φ = 81600242424298.

The previous prime is 81600242424229. The next prime is 81600242424347. The reversal of 81600242424299 is 99242424200618.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81600242424299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 81600242424299.

It is not a weakly prime, because it can be changed into another prime (81600242424229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40800121212149 + 40800121212150.

It is an arithmetic number, because the mean of its divisors is an integer number (40800121212150).

Almost surely, 2^{81600242424299} is an apocalyptic number.

81600242424299 is a deficient number, since it is larger than the sum of its proper divisors (1).

81600242424299 is an equidigital number, since it uses as much as digits as its factorization.

81600242424299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3981312, while the sum is 53.

The spelling of 81600242424299 in words is "eighty-one trillion, six hundred billion, two hundred forty-two million, four hundred twenty-four thousand, two hundred ninety-nine".