66374230999 has 4 divisors (see below), whose sum is σ = 66562260336. Its totient is φ = 66186201664.

The previous prime is 66374230987. The next prime is 66374231017. The reversal of 66374230999 is 99903247366.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66374230999 - 2¹⁷ = 66374099927 is a prime.

It is a super-2 number, since 2×66374230999² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66374230969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94014139 + ... + 94014844.

It is an arithmetic number, because the mean of its divisors is an integer number (16640565084).

Almost surely, 2^66374230999 is an apocalyptic number.

66374230999 is a deficient number, since it is larger than the sum of its proper divisors (188029337).

66374230999 is a wasteful number, since it uses less digits than its factorization.

66374230999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188029336.

The product of its (nonzero) digits is 13226976, while the sum is 58.

The spelling of 66374230999 in words is "sixty-six billion, three hundred seventy-four million, two hundred thirty thousand, nine hundred ninety-nine".