66075710371 has 12 divisors (see below), whose sum is σ = 72818355456. Its totient is φ = 59911947920.

The previous prime is 66075710357. The next prime is 66075710377. The reversal of 66075710371 is 17301757066.

It is not a de Polignac number, because 66075710371 - 2⁵ = 66075710339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66075710377) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 666556 + ... + 759241.

It is an arithmetic number, because the mean of its divisors is an integer number (6068196288).

Almost surely, 2^66075710371 is an apocalyptic number.

66075710371 is a deficient number, since it is larger than the sum of its proper divisors (6742645085).

66075710371 is a wasteful number, since it uses less digits than its factorization.

66075710371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426202 (or 1426191 counting only the distinct ones).

The product of its (nonzero) digits is 185220, while the sum is 43.

The spelling of 66075710371 in words is "sixty-six billion, seventy-five million, seven hundred ten thousand, three hundred seventy-one".