81414305587 has 2 divisors, whose sum is σ = 81414305588. Its totient is φ = 81414305586.

The previous prime is 81414305537. The next prime is 81414305593. The reversal of 81414305587 is 78550341418.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 81414305587 - 2⁷ = 81414305459 is a prime.

It is not a weakly prime, because it can be changed into another prime (81414305537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40707152793 + 40707152794.

It is an arithmetic number, because the mean of its divisors is an integer number (40707152794).

Almost surely, 2^81414305587 is an apocalyptic number.

81414305587 is a deficient number, since it is larger than the sum of its proper divisors (1).

81414305587 is an equidigital number, since it uses as much as digits as its factorization.

81414305587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 537600, while the sum is 46.

The spelling of 81414305587 in words is "eighty-one billion, four hundred fourteen million, three hundred five thousand, five hundred eighty-seven".