66161260201 has 8 divisors (see below), whose sum is σ = 66756983040. Its totient is φ = 65568145152.

The previous prime is 66161260163. The next prime is 66161260223. The reversal of 66161260201 is 10206216166.

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 66161260201 - 2⁷ = 66161260073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66161260901) 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, 600961 + ... + 702478.

It is an arithmetic number, because the mean of its divisors is an integer number (8344622880).

Almost surely, 2^66161260201 is an apocalyptic number.

It is an amenable number.

66161260201 is a deficient number, since it is larger than the sum of its proper divisors (595722839).

66161260201 is a wasteful number, since it uses less digits than its factorization.

66161260201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303895.

The product of its (nonzero) digits is 5184, while the sum is 31.

Adding to 66161260201 its reverse (10206216166), we get a palindrome (76367476367).

The spelling of 66161260201 in words is "sixty-six billion, one hundred sixty-one million, two hundred sixty thousand, two hundred one".