1660503134377 has 2 divisors, whose sum is σ = 1660503134378. Its totient is φ = 1660503134376.

The previous prime is 1660503134351. The next prime is 1660503134401. The reversal of 1660503134377 is 7734313050661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1133875706896 + 526627427481 = 1064836^2 + 725691^2 .

It is a cyclic number.

It is not a de Polignac number, because 1660503134377 - 2¹⁹ = 1660502610089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1660503134077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830251567188 + 830251567189.

It is an arithmetic number, because the mean of its divisors is an integer number (830251567189).

Almost surely, 2^{1660503134377} is an apocalyptic number.

It is an amenable number.

1660503134377 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660503134377 is an equidigital number, since it uses as much as digits as its factorization.

1660503134377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 952560, while the sum is 46.

The spelling of 1660503134377 in words is "one trillion, six hundred sixty billion, five hundred three million, one hundred thirty-four thousand, three hundred seventy-seven".