660511511201 has 8 divisors (see below), whose sum is σ = 670104494208. Its totient is φ = 650926584000.

The previous prime is 660511511123. The next prime is 660511511263. The reversal of 660511511201 is 102115115066.

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 660511511201 - 2¹⁰ = 660511510177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660511511281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1848680 + ... + 2176841.

It is an arithmetic number, because the mean of its divisors is an integer number (83763061776).

Almost surely, 2^660511511201 is an apocalyptic number.

It is an amenable number.

660511511201 is a deficient number, since it is larger than the sum of its proper divisors (9592983007).

660511511201 is a wasteful number, since it uses less digits than its factorization.

660511511201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4027903.

The product of its (nonzero) digits is 1800, while the sum is 29.

Adding to 660511511201 its reverse (102115115066), we get a palindrome (762626626267).

The spelling of 660511511201 in words is "six hundred sixty billion, five hundred eleven million, five hundred eleven thousand, two hundred one".