660615606616 has 32 divisors (see below), whose sum is σ = 1464418836000. Its totient is φ = 273358181376.

The previous prime is 660615606613. The next prime is 660615606641. The reversal of 660615606616 is 616606516066.

It is a self number, because there is not a number n which added to its sum of digits gives 660615606616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660615606613) 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, 203389881 + ... + 203393128.

It is an arithmetic number, because the mean of its divisors is an integer number (45763088625).

Almost surely, 2^660615606616 is an apocalyptic number.

It is an amenable number.

660615606616 is an abundant number, since it is smaller than the sum of its proper divisors (803803229384).

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

660615606616 is a wasteful number, since it uses less digits than its factorization.

660615606616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406783051 (or 406783047 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 49.

The spelling of 660615606616 in words is "six hundred sixty billion, six hundred fifteen million, six hundred six thousand, six hundred sixteen".