66807308423 has 8 divisors (see below), whose sum is σ = 66972301440. Its totient is φ = 66642374520.

The previous prime is 66807308389. The next prime is 66807308437. The reversal of 66807308423 is 32480370866.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66807308423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66807308443) 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, 2985908 + ... + 3008198.

It is an arithmetic number, because the mean of its divisors is an integer number (8371537680).

Almost surely, 2^66807308423 is an apocalyptic number.

66807308423 is a deficient number, since it is larger than the sum of its proper divisors (164993017).

66807308423 is a wasteful number, since it uses less digits than its factorization.

66807308423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29557.

The product of its (nonzero) digits is 1161216, while the sum is 47.

The spelling of 66807308423 in words is "sixty-six billion, eight hundred seven million, three hundred eight thousand, four hundred twenty-three".