66376312291 has 8 divisors (see below), whose sum is σ = 66516065280. Its totient is φ = 66236651208.

The previous prime is 66376312243. The next prime is 66376312297. The reversal of 66376312291 is 19221367366.

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 66376312291 - 2¹¹ = 66376310243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66376312297) 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, 1532430 + ... + 1575148.

It is an arithmetic number, because the mean of its divisors is an integer number (8314508160).

Almost surely, 2^66376312291 is an apocalyptic number.

66376312291 is a deficient number, since it is larger than the sum of its proper divisors (139752989).

66376312291 is a wasteful number, since it uses less digits than its factorization.

66376312291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45953.

The product of its digits is 489888, while the sum is 46.

The spelling of 66376312291 in words is "sixty-six billion, three hundred seventy-six million, three hundred twelve thousand, two hundred ninety-one".