80687938843 has 2 divisors, whose sum is σ = 80687938844. Its totient is φ = 80687938842.

The previous prime is 80687938829. The next prime is 80687938889. The reversal of 80687938843 is 34883978608.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80687938843 is a prime.

It is not a weakly prime, because it can be changed into another prime (80687978843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40343969421 + 40343969422.

It is an arithmetic number, because the mean of its divisors is an integer number (40343969422).

Almost surely, 2^80687938843 is an apocalyptic number.

80687938843 is a deficient number, since it is larger than the sum of its proper divisors (1).

80687938843 is an equidigital number, since it uses as much as digits as its factorization.

80687938843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55738368, while the sum is 64.

The spelling of 80687938843 in words is "eighty billion, six hundred eighty-seven million, nine hundred thirty-eight thousand, eight hundred forty-three".