165260344504531 has 2 divisors, whose sum is σ = 165260344504532. Its totient is φ = 165260344504530.

The previous prime is 165260344504523. The next prime is 165260344504573. The reversal of 165260344504531 is 135405443062561.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165260344504531 - 2³ = 165260344504523 is a prime.

It is a super-2 number, since 2×165260344504531² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (165260344534531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82630172252265 + 82630172252266.

It is an arithmetic number, because the mean of its divisors is an integer number (82630172252266).

Almost surely, 2^{165260344504531} is an apocalyptic number.

165260344504531 is a deficient number, since it is larger than the sum of its proper divisors (1).

165260344504531 is an equidigital number, since it uses as much as digits as its factorization.

165260344504531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184000, while the sum is 49.

The spelling of 165260344504531 in words is "one hundred sixty-five trillion, two hundred sixty billion, three hundred forty-four million, five hundred four thousand, five hundred thirty-one".