66165232101 has 8 divisors (see below), whose sum is σ = 88287813024. Its totient is φ = 44076402960.

The previous prime is 66165232099. The next prime is 66165232123. The reversal of 66165232101 is 10123256166.

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

It is not a de Polignac number, because 66165232101 - 2¹ = 66165232099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66165232801) 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, 8433370 + ... + 8441211.

It is an arithmetic number, because the mean of its divisors is an integer number (11035976628).

Almost surely, 2^66165232101 is an apocalyptic number.

It is an amenable number.

66165232101 is a deficient number, since it is larger than the sum of its proper divisors (22122580923).

66165232101 is a wasteful number, since it uses less digits than its factorization.

66165232101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16875891.

The product of its (nonzero) digits is 12960, while the sum is 33.

Adding to 66165232101 its reverse (10123256166), we get a palindrome (76288488267).

The spelling of 66165232101 in words is "sixty-six billion, one hundred sixty-five million, two hundred thirty-two thousand, one hundred one".