66017044786 has 32 divisors (see below), whose sum is σ = 123472685952. Its totient is φ = 25718376960.

The previous prime is 66017044783. The next prime is 66017044787. The reversal of 66017044786 is 68744071066.

It is not an unprimeable number, because it can be changed into a prime (66017044781) 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, 2524450 + ... + 2550466.

It is an arithmetic number, because the mean of its divisors is an integer number (3858521436).

Almost surely, 2^66017044786 is an apocalyptic number.

66017044786 is a deficient number, since it is larger than the sum of its proper divisors (57455641166).

66017044786 is a wasteful number, since it uses less digits than its factorization.

66017044786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42514.

The product of its (nonzero) digits is 1354752, while the sum is 49.

The spelling of 66017044786 in words is "sixty-six billion, seventeen million, forty-four thousand, seven hundred eighty-six".