660106421366411 has 4 divisors (see below), whose sum is σ = 660570305008992. Its totient is φ = 659642537723832.

The previous prime is 660106421366387. The next prime is 660106421366437. The reversal of 660106421366411 is 114663124601066.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 660106421366411 - 2¹⁰ = 660106421365387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660106411366411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231941819156 + ... + 231941822001.

It is an arithmetic number, because the mean of its divisors is an integer number (165142576252248).

Almost surely, 2^{660106421366411} is an apocalyptic number.

660106421366411 is a deficient number, since it is larger than the sum of its proper divisors (463883642581).

660106421366411 is a wasteful number, since it uses less digits than its factorization.

660106421366411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463883642580.

The product of its (nonzero) digits is 746496, while the sum is 47.

Adding to 660106421366411 its reverse (114663124601066), we get a palindrome (774769545967477).

The spelling of 660106421366411 in words is "six hundred sixty trillion, one hundred six billion, four hundred twenty-one million, three hundred sixty-six thousand, four hundred eleven".