66426410201 has 8 divisors (see below), whose sum is σ = 68815024200. Its totient is φ = 64044332800.

The previous prime is 66426410189. The next prime is 66426410209. The reversal of 66426410201 is 10201462466.

It can be written as a sum of positive squares in 4 ways, for example, as 17233388176 + 49193022025 = 131276^2 + 221795^2 .

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 66426410201 - 2¹⁸ = 66426148057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66426410209) 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, 1613456 + ... + 1654113.

It is an arithmetic number, because the mean of its divisors is an integer number (8601878025).

Almost surely, 2^66426410201 is an apocalyptic number.

It is an amenable number.

66426410201 is a deficient number, since it is larger than the sum of its proper divisors (2388613999).

66426410201 is a wasteful number, since it uses less digits than its factorization.

66426410201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3268299.

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 66426410201 its reverse (10201462466), we get a palindrome (76627872667).

The spelling of 66426410201 in words is "sixty-six billion, four hundred twenty-six million, four hundred ten thousand, two hundred one".