81134580299 has 2 divisors, whose sum is σ = 81134580300. Its totient is φ = 81134580298.

The previous prime is 81134580287. The next prime is 81134580431. The reversal of 81134580299 is 99208543118.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 81134580299 - 2¹⁶ = 81134514763 is a prime.

It is not a weakly prime, because it can be changed into another prime (81134580199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40567290149 + 40567290150.

It is an arithmetic number, because the mean of its divisors is an integer number (40567290150).

Almost surely, 2^81134580299 is an apocalyptic number.

81134580299 is a deficient number, since it is larger than the sum of its proper divisors (1).

81134580299 is an equidigital number, since it uses as much as digits as its factorization.

81134580299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 50.

The spelling of 81134580299 in words is "eighty-one billion, one hundred thirty-four million, five hundred eighty thousand, two hundred ninety-nine".