66349034965 has 16 divisors (see below), whose sum is σ = 81322548480. Its totient is φ = 51943693120.

The previous prime is 66349034963. The next prime is 66349034971. The reversal of 66349034965 is 56943094366.

It is not a de Polignac number, because 66349034965 - 2¹ = 66349034963 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66349034963) 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, 3765546 + ... + 3783124.

It is an arithmetic number, because the mean of its divisors is an integer number (5082659280).

Almost surely, 2^66349034965 is an apocalyptic number.

It is an amenable number.

66349034965 is a deficient number, since it is larger than the sum of its proper divisors (14973513515).

66349034965 is a wasteful number, since it uses less digits than its factorization.

66349034965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33692.

The product of its (nonzero) digits is 12597120, while the sum is 55.

The spelling of 66349034965 in words is "sixty-six billion, three hundred forty-nine million, thirty-four thousand, nine hundred sixty-five".