80689912611839 has 2 divisors, whose sum is σ = 80689912611840. Its totient is φ = 80689912611838.

The previous prime is 80689912611797. The next prime is 80689912611859. The reversal of 80689912611839 is 93811621998608.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80689912611839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80689912611859) 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, 40344956305919 + 40344956305920.

It is an arithmetic number, because the mean of its divisors is an integer number (40344956305920).

Almost surely, 2^{80689912611839} is an apocalyptic number.

80689912611839 is a deficient number, since it is larger than the sum of its proper divisors (1).

80689912611839 is an equidigital number, since it uses as much as digits as its factorization.

80689912611839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80621568, while the sum is 71.

The spelling of 80689912611839 in words is "eighty trillion, six hundred eighty-nine billion, nine hundred twelve million, six hundred eleven thousand, eight hundred thirty-nine".