660120050656 has 48 divisors (see below), whose sum is σ = 1417823347248. Its totient is φ = 300040704000.

The previous prime is 660120050617. The next prime is 660120050657. The reversal of 660120050656 is 656050021066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660120050657) 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, 14745106 + ... + 14789806.

It is an arithmetic number, because the mean of its divisors is an integer number (29537986401).

Almost surely, 2^660120050656 is an apocalyptic number.

It is an amenable number.

660120050656 is an abundant number, since it is smaller than the sum of its proper divisors (757703296592).

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

660120050656 is a wasteful number, since it uses less digits than its factorization.

660120050656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86675 (or 86667 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 660120050656 in words is "six hundred sixty billion, one hundred twenty million, fifty thousand, six hundred fifty-six".