80727866887 has 2 divisors, whose sum is σ = 80727866888. Its totient is φ = 80727866886.

The previous prime is 80727866809. The next prime is 80727866939. The reversal of 80727866887 is 78866872708.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80727866887 - 2¹⁵ = 80727834119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80727846887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40363933443 + 40363933444.

It is an arithmetic number, because the mean of its divisors is an integer number (40363933444).

Almost surely, 2^80727866887 is an apocalyptic number.

80727866887 is a deficient number, since it is larger than the sum of its proper divisors (1).

80727866887 is an equidigital number, since it uses as much as digits as its factorization.

80727866887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 101154816, while the sum is 67.

The spelling of 80727866887 in words is "eighty billion, seven hundred twenty-seven million, eight hundred sixty-six thousand, eight hundred eighty-seven".