1660655002129 has 2 divisors, whose sum is σ = 1660655002130. Its totient is φ = 1660655002128.

The previous prime is 1660655001913. The next prime is 1660655002163. The reversal of 1660655002129 is 9212005560661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 995006250000 + 665648752129 = 997500^2 + 815873^2 .

It is a cyclic number.

It is not a de Polignac number, because 1660655002129 - 2¹⁹ = 1660654477841 is a prime.

It is not a weakly prime, because it can be changed into another prime (1660655002529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830327501064 + 830327501065.

It is an arithmetic number, because the mean of its divisors is an integer number (830327501065).

Almost surely, 2^{1660655002129} is an apocalyptic number.

It is an amenable number.

1660655002129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660655002129 is an equidigital number, since it uses as much as digits as its factorization.

1660655002129 is an evil number, because the sum of its binary digits is even.

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

The spelling of 1660655002129 in words is "one trillion, six hundred sixty billion, six hundred fifty-five million, two thousand, one hundred twenty-nine".