66005105216710 has 64 divisors (see below), whose sum is σ = 131550125704704. Its totient is φ = 23642609126400.

The previous prime is 66005105216669. The next prime is 66005105216711. The reversal of 66005105216710 is 1761250150066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66005105216711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184299574 + ... + 184657366.

It is an arithmetic number, because the mean of its divisors is an integer number (2055470714136).

Almost surely, 2^{66005105216710} is an apocalyptic number.

66005105216710 is a deficient number, since it is larger than the sum of its proper divisors (65545020487994).

66005105216710 is a wasteful number, since it uses less digits than its factorization.

66005105216710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382909.

The product of its (nonzero) digits is 75600, while the sum is 40.

Adding to 66005105216710 its reverse (1761250150066), we get a palindrome (67766355366776).

The spelling of 66005105216710 in words is "sixty-six trillion, five billion, one hundred five million, two hundred sixteen thousand, seven hundred ten".