165760111457 has 2 divisors, whose sum is σ = 165760111458. Its totient is φ = 165760111456.

The previous prime is 165760111423. The next prime is 165760111463. The reversal of 165760111457 is 754111067561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129309283216 + 36450828241 = 359596^2 + 190921^2 .

It is an emirp because it is prime and its reverse (754111067561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165760111457 - 2²⁴ = 165743334241 is a prime.

It is not a weakly prime, because it can be changed into another prime (165760111157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82880055728 + 82880055729.

It is an arithmetic number, because the mean of its divisors is an integer number (82880055729).

Almost surely, 2^165760111457 is an apocalyptic number.

It is an amenable number.

165760111457 is a deficient number, since it is larger than the sum of its proper divisors (1).

165760111457 is an equidigital number, since it uses as much as digits as its factorization.

165760111457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 176400, while the sum is 44.

The spelling of 165760111457 in words is "one hundred sixty-five billion, seven hundred sixty million, one hundred eleven thousand, four hundred fifty-seven".