1660605116560 has 40 divisors (see below), whose sum is σ = 4157899736760. Its totient is φ = 613146504192.

The previous prime is 1660605116543. The next prime is 1660605116587. The reversal of 1660605116560 is 656115060661.

It can be written as a sum of positive squares in 4 ways, for example, as 9616548096 + 1650988568464 = 98064^2 + 1284908^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 798366805 + ... + 798368884.

It is an arithmetic number, because the mean of its divisors is an integer number (103947493419).

Almost surely, 2^{1660605116560} is an apocalyptic number.

1660605116560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1660605116560 is an abundant number, since it is smaller than the sum of its proper divisors (2497294620200).

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

1660605116560 is a wasteful number, since it uses less digits than its factorization.

1660605116560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596735715 (or 1596735709 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 1660605116560 in words is "one trillion, six hundred sixty billion, six hundred five million, one hundred sixteen thousand, five hundred sixty".