165115265126723 has 2 divisors, whose sum is σ = 165115265126724. Its totient is φ = 165115265126722.

The previous prime is 165115265126611. The next prime is 165115265126761. The reversal of 165115265126723 is 327621562511561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165115265126723 - 2⁸ = 165115265126467 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (165115265126783) 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, 82557632563361 + 82557632563362.

It is an arithmetic number, because the mean of its divisors is an integer number (82557632563362).

Almost surely, 2^{165115265126723} is an apocalyptic number.

165115265126723 is a deficient number, since it is larger than the sum of its proper divisors (1).

165115265126723 is an equidigital number, since it uses as much as digits as its factorization.

165115265126723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536000, while the sum is 53.

The spelling of 165115265126723 in words is "one hundred sixty-five trillion, one hundred fifteen billion, two hundred sixty-five million, one hundred twenty-six thousand, seven hundred twenty-three".