66168138301 has 8 divisors (see below), whose sum is σ = 66758236160. Its totient is φ = 65579120208.

The previous prime is 66168138233. The next prime is 66168138329. The reversal of 66168138301 is 10383186166.

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-66168138301 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 (66168138341) 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, 146586 + ... + 392203.

It is an arithmetic number, because the mean of its divisors is an integer number (8344779520).

Almost surely, 2^66168138301 is an apocalyptic number.

It is an amenable number.

66168138301 is a deficient number, since it is larger than the sum of its proper divisors (590097859).

66168138301 is a wasteful number, since it uses less digits than its factorization.

66168138301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539883.

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 66168138301 in words is "sixty-six billion, one hundred sixty-eight million, one hundred thirty-eight thousand, three hundred one".