2165137742423 has 2 divisors, whose sum is σ = 2165137742424. Its totient is φ = 2165137742422.

The previous prime is 2165137742377. The next prime is 2165137742447. The reversal of 2165137742423 is 3242477315612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2165137742423 - 2¹⁴ = 2165137726039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2165137742723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082568871211 + 1082568871212.

It is an arithmetic number, because the mean of its divisors is an integer number (1082568871212).

Almost surely, 2^{2165137742423} is an apocalyptic number.

2165137742423 is a deficient number, since it is larger than the sum of its proper divisors (1).

2165137742423 is an equidigital number, since it uses as much as digits as its factorization.

2165137742423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 47.

The spelling of 2165137742423 in words is "two trillion, one hundred sixty-five billion, one hundred thirty-seven million, seven hundred forty-two thousand, four hundred twenty-three".