86623543720523 has 2 divisors, whose sum is σ = 86623543720524. Its totient is φ = 86623543720522.

The previous prime is 86623543720463. The next prime is 86623543720541. The reversal of 86623543720523 is 32502734532668.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86623543720523 - 2¹⁸ = 86623543458379 is a prime.

It is not a weakly prime, because it can be changed into another prime (86623543720123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43311771860261 + 43311771860262.

It is an arithmetic number, because the mean of its divisors is an integer number (43311771860262).

Almost surely, 2^{86623543720523} is an apocalyptic number.

86623543720523 is a deficient number, since it is larger than the sum of its proper divisors (1).

86623543720523 is an equidigital number, since it uses as much as digits as its factorization.

86623543720523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43545600, while the sum is 56.

The spelling of 86623543720523 in words is "eighty-six trillion, six hundred twenty-three billion, five hundred forty-three million, seven hundred twenty thousand, five hundred twenty-three".