265161252646165 has 8 divisors (see below), whose sum is σ = 321167274233760. Its totient is φ = 210146488078032.

The previous prime is 265161252646123. The next prime is 265161252646183. The reversal of 265161252646165 is 561646252161562.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 265161252646165 - 2¹⁹ = 265161252121877 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 247814254275 + ... + 247814255344.

It is an arithmetic number, because the mean of its divisors is an integer number (40145909279220).

Almost surely, 2^{265161252646165} is an apocalyptic number.

It is an amenable number.

265161252646165 is a deficient number, since it is larger than the sum of its proper divisors (56006021587595).

265161252646165 is a wasteful number, since it uses less digits than its factorization.

265161252646165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495628509731.

The product of its digits is 31104000, while the sum is 58.

The spelling of 265161252646165 in words is "two hundred sixty-five trillion, one hundred sixty-one billion, two hundred fifty-two million, six hundred forty-six thousand, one hundred sixty-five".