81888516413059 has 2 divisors, whose sum is σ = 81888516413060. Its totient is φ = 81888516413058.

The previous prime is 81888516413023. The next prime is 81888516413111. The reversal of 81888516413059 is 95031461588818.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 81888516413059 - 2¹³ = 81888516404867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 81888516412985 and 81888516413003.

It is not a weakly prime, because it can be changed into another prime (81888516413959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40944258206529 + 40944258206530.

It is an arithmetic number, because the mean of its divisors is an integer number (40944258206530).

Almost surely, 2^{81888516413059} is an apocalyptic number.

81888516413059 is a deficient number, since it is larger than the sum of its proper divisors (1).

81888516413059 is an equidigital number, since it uses as much as digits as its factorization.

81888516413059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 66355200, while the sum is 67.

The spelling of 81888516413059 in words is "eighty-one trillion, eight hundred eighty-eight billion, five hundred sixteen million, four hundred thirteen thousand, fifty-nine".