660511510688 has 24 divisors (see below), whose sum is σ = 1300406915808. Its totient is φ = 330249436864.

The previous prime is 660511510601. The next prime is 660511510723. The reversal of 660511510688 is 886015115066.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1817645 + ... + 2150547.

It is an arithmetic number, because the mean of its divisors is an integer number (54183621492).

Almost surely, 2^660511510688 is an apocalyptic number.

It is an amenable number.

660511510688 is a deficient number, since it is larger than the sum of its proper divisors (639895405120).

660511510688 is a wasteful number, since it uses less digits than its factorization.

660511510688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394916 (or 394908 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 47.

The spelling of 660511510688 in words is "six hundred sixty billion, five hundred eleven million, five hundred ten thousand, six hundred eighty-eight".