660525402660 has 24 divisors (see below), whose sum is σ = 1849471127616. Its totient is φ = 176140107360.

The previous prime is 660525402631. The next prime is 660525402679. The reversal of 660525402660 is 66204525066.

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 7 ways as a sum of consecutive naturals, for example, 5504378296 + ... + 5504378415.

It is an arithmetic number, because the mean of its divisors is an integer number (77061296984).

Almost surely, 2^660525402660 is an apocalyptic number.

660525402660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

660525402660 is an abundant number, since it is smaller than the sum of its proper divisors (1188945724956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

660525402660 is a wasteful number, since it uses less digits than its factorization.

660525402660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11008756723 (or 11008756721 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 660525402660 in words is "six hundred sixty billion, five hundred twenty-five million, four hundred two thousand, six hundred sixty".