866027720711 has 2 divisors, whose sum is σ = 866027720712. Its totient is φ = 866027720710.

The previous prime is 866027720651. The next prime is 866027720729. The reversal of 866027720711 is 117027720668.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 866027720711 - 2¹⁸ = 866027458567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (866027720731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433013860355 + 433013860356.

It is an arithmetic number, because the mean of its divisors is an integer number (433013860356).

Almost surely, 2^866027720711 is an apocalyptic number.

866027720711 is a deficient number, since it is larger than the sum of its proper divisors (1).

866027720711 is an equidigital number, since it uses as much as digits as its factorization.

866027720711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 395136, while the sum is 47.

The spelling of 866027720711 in words is "eight hundred sixty-six billion, twenty-seven million, seven hundred twenty thousand, seven hundred eleven".