66257134207 has 8 divisors (see below), whose sum is σ = 72287650512. Its totient is φ = 60227808000.

The previous prime is 66257134199. The next prime is 66257134247. The reversal of 66257134207 is 70243175266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66257134207 - 2³ = 66257134199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66257134247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179058 + ... + 405679.

It is an arithmetic number, because the mean of its divisors is an integer number (9035956314).

Almost surely, 2^66257134207 is an apocalyptic number.

66257134207 is a deficient number, since it is larger than the sum of its proper divisors (6030516305).

66257134207 is a wasteful number, since it uses less digits than its factorization.

66257134207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595049.

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 66257134207 in words is "sixty-six billion, two hundred fifty-seven million, one hundred thirty-four thousand, two hundred seven".