66147137323 has 8 divisors (see below), whose sum is σ = 66229626960. Its totient is φ = 66064696320.

The previous prime is 66147137281. The next prime is 66147137383. The reversal of 66147137323 is 32373174166.

It is a happy number.

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 66147137323 - 2²⁹ = 65610266411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66147137323.

It is not an unprimeable number, because it can be changed into a prime (66147137383) 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, 3225783 + ... + 3246223.

It is an arithmetic number, because the mean of its divisors is an integer number (8278703370).

Almost surely, 2^66147137323 is an apocalyptic number.

66147137323 is a deficient number, since it is larger than the sum of its proper divisors (82489637).

66147137323 is a wasteful number, since it uses less digits than its factorization.

66147137323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24317.

The product of its digits is 381024, while the sum is 43.

The spelling of 66147137323 in words is "sixty-six billion, one hundred forty-seven million, one hundred thirty-seven thousand, three hundred twenty-three".