66344606195 has 48 divisors (see below), whose sum is σ = 94482988416. Its totient is φ = 44579808000.

The previous prime is 66344606191. The next prime is 66344606213. The reversal of 66344606195 is 59160644366.

It is not a de Polignac number, because 66344606195 - 2² = 66344606191 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66344606191) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4041905 + ... + 4058285.

It is an arithmetic number, because the mean of its divisors is an integer number (1968395592).

Almost surely, 2^66344606195 is an apocalyptic number.

66344606195 is a deficient number, since it is larger than the sum of its proper divisors (28138382221).

66344606195 is a wasteful number, since it uses less digits than its factorization.

66344606195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16732 (or 16725 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 50.

The spelling of 66344606195 in words is "sixty-six billion, three hundred forty-four million, six hundred six thousand, one hundred ninety-five".