66202027401 has 16 divisors (see below), whose sum is σ = 91145945088. Its totient is φ = 42697309200.

The previous prime is 66202027373. The next prime is 66202027417. The reversal of 66202027401 is 10472020266.

It is not a de Polignac number, because 66202027401 - 2⁷ = 66202027273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66202027471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182146 + ... + 406916.

It is an arithmetic number, because the mean of its divisors is an integer number (5696621568).

Almost surely, 2^66202027401 is an apocalyptic number.

It is an amenable number.

66202027401 is a deficient number, since it is larger than the sum of its proper divisors (24943917687).

66202027401 is a wasteful number, since it uses less digits than its factorization.

66202027401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227972.

The product of its (nonzero) digits is 8064, while the sum is 30.

Adding to 66202027401 its reverse (10472020266), we get a palindrome (76674047667).

The spelling of 66202027401 in words is "sixty-six billion, two hundred two million, twenty-seven thousand, four hundred one".