1660505112727 has 12 divisors (see below), whose sum is σ = 1778027741080. Its totient is φ = 1546447162032.

The previous prime is 1660505112703. The next prime is 1660505112731. The reversal of 1660505112727 is 7272115050661.

It is not a de Polignac number, because 1660505112727 - 2¹¹ = 1660505110679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660505115727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12487008 + ... + 12619285.

Almost surely, 2^{1660505112727} is an apocalyptic number.

1660505112727 is a deficient number, since it is larger than the sum of its proper divisors (117522628353).

1660505112727 is an equidigital number, since it uses as much as digits as its factorization.

1660505112727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25106430 (or 25106371 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 43.

The spelling of 1660505112727 in words is "one trillion, six hundred sixty billion, five hundred five million, one hundred twelve thousand, seven hundred twenty-seven".