66143097901 has 8 divisors (see below), whose sum is σ = 69628287680. Its totient is φ = 62658305568.

The previous prime is 66143097893. The next prime is 66143097929. The reversal of 66143097901 is 10979034166.

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 66143097901 - 2³ = 66143097893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66143097401) 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, 279280 + ... + 458566.

It is an arithmetic number, because the mean of its divisors is an integer number (8703535960).

Almost surely, 2^66143097901 is an apocalyptic number.

It is an amenable number.

66143097901 is a deficient number, since it is larger than the sum of its proper divisors (3485189779).

66143097901 is a wasteful number, since it uses less digits than its factorization.

66143097901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198723.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 66143097901 in words is "sixty-six billion, one hundred forty-three million, ninety-seven thousand, nine hundred one".