1660365944481 has 8 divisors (see below), whose sum is σ = 2238695655840. Its totient is φ = 1094473431392.

The previous prime is 1660365944441. The next prime is 1660365944537. The reversal of 1660365944481 is 1844495630661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1660365944481 - 2⁹ = 1660365943969 is a prime.

It is a super-2 number, since 2×1660365944481² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1660365944441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3109299255 + ... + 3109299788.

It is an arithmetic number, because the mean of its divisors is an integer number (279836956980).

Almost surely, 2^{1660365944481} is an apocalyptic number.

It is an amenable number.

1660365944481 is a deficient number, since it is larger than the sum of its proper divisors (578329711359).

1660365944481 is an equidigital number, since it uses as much as digits as its factorization.

1660365944481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6218599135.

The product of its (nonzero) digits is 14929920, while the sum is 57.

The spelling of 1660365944481 in words is "one trillion, six hundred sixty billion, three hundred sixty-five million, nine hundred forty-four thousand, four hundred eighty-one".