866763546383447 has 16 divisors (see below), whose sum is σ = 906211199105280. Its totient is φ = 827463753600000.

The previous prime is 866763546383443. The next prime is 866763546383479. The reversal of 866763546383447 is 744383645367668.

It is a cyclic number.

It is not a de Polignac number, because 866763546383447 - 2² = 866763546383443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866763546383443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26624072 + ... + 49420322.

It is an arithmetic number, because the mean of its divisors is an integer number (56638199944080).

Almost surely, 2^{866763546383447} is an apocalyptic number.

866763546383447 is a deficient number, since it is larger than the sum of its proper divisors (39447652721833).

866763546383447 is a wasteful number, since it uses less digits than its factorization.

866763546383447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22799494.

The product of its digits is 35115171840, while the sum is 80.

The spelling of 866763546383447 in words is "eight hundred sixty-six trillion, seven hundred sixty-three billion, five hundred forty-six million, three hundred eighty-three thousand, four hundred forty-seven".