66086411863 has 4 divisors (see below), whose sum is σ = 66205059480. Its totient is φ = 65967764248.

The previous prime is 66086411827. The next prime is 66086411869. The reversal of 66086411863 is 36811468066.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36811468066 = 2 ⋅18405734033.

It is a cyclic number.

It is not a de Polignac number, because 66086411863 - 2³³ = 57496477271 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 (66086411869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59322973 + ... + 59324086.

It is an arithmetic number, because the mean of its divisors is an integer number (16551264870).

Almost surely, 2^66086411863 is an apocalyptic number.

66086411863 is a deficient number, since it is larger than the sum of its proper divisors (118647617).

66086411863 is a wasteful number, since it uses less digits than its factorization.

66086411863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118647616.

The product of its (nonzero) digits is 995328, while the sum is 49.

The spelling of 66086411863 in words is "sixty-six billion, eighty-six million, four hundred eleven thousand, eight hundred sixty-three".