2165011317503 has 2 divisors, whose sum is σ = 2165011317504. Its totient is φ = 2165011317502.

The previous prime is 2165011317499. The next prime is 2165011317509. The reversal of 2165011317503 is 3057131105612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2165011317503 - 2² = 2165011317499 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2165011317509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082505658751 + 1082505658752.

It is an arithmetic number, because the mean of its divisors is an integer number (1082505658752).

Almost surely, 2^{2165011317503} is an apocalyptic number.

2165011317503 is a deficient number, since it is larger than the sum of its proper divisors (1).

2165011317503 is an equidigital number, since it uses as much as digits as its factorization.

2165011317503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 35.

The spelling of 2165011317503 in words is "two trillion, one hundred sixty-five billion, eleven million, three hundred seventeen thousand, five hundred three".