660417426143211 has 64 divisors (see below), whose sum is σ = 974699910807552. Its totient is φ = 394387593600000.

The previous prime is 660417426143201. The next prime is 660417426143213. The reversal of 660417426143211 is 112341624714066.

It is a happy number.

It is not a de Polignac number, because 660417426143211 - 2¹¹ = 660417426141163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (660417426143213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45355217371 + ... + 45355231931.

It is an arithmetic number, because the mean of its divisors is an integer number (15229686106368).

Almost surely, 2^{660417426143211} is an apocalyptic number.

660417426143211 is a deficient number, since it is larger than the sum of its proper divisors (314282484664341).

660417426143211 is a wasteful number, since it uses less digits than its factorization.

660417426143211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24504.

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 660417426143211 in words is "six hundred sixty trillion, four hundred seventeen billion, four hundred twenty-six million, one hundred forty-three thousand, two hundred eleven".