66140360175 has 24 divisors (see below), whose sum is σ = 113122826640. Its totient is φ = 34058483200.

The previous prime is 66140360129. The next prime is 66140360207. The reversal of 66140360175 is 57106304166.

It is not a de Polignac number, because 66140360175 - 2²³ = 66131971567 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15202506 + ... + 15206855.

It is an arithmetic number, because the mean of its divisors is an integer number (4713451110).

Almost surely, 2^66140360175 is an apocalyptic number.

66140360175 is a deficient number, since it is larger than the sum of its proper divisors (46982466465).

66140360175 is a wasteful number, since it uses less digits than its factorization.

66140360175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30409403 (or 30409398 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The spelling of 66140360175 in words is "sixty-six billion, one hundred forty million, three hundred sixty thousand, one hundred seventy-five".