165313363022665 has 32 divisors (see below), whose sum is σ = 241093614585600. Its totient is φ = 107152717566720.

The previous prime is 165313363022557. The next prime is 165313363022681. The reversal of 165313363022665 is 566220363313561.

It is not a de Polignac number, because 165313363022665 - 2¹³ = 165313363014473 is a prime.

It is a super-3 number, since 3×165313363022665³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3986315485 + ... + 3986356954.

It is an arithmetic number, because the mean of its divisors is an integer number (7534175455800).

Almost surely, 2^{165313363022665} is an apocalyptic number.

It is an amenable number.

165313363022665 is a deficient number, since it is larger than the sum of its proper divisors (75780251562935).

165313363022665 is a wasteful number, since it uses less digits than its factorization.

165313363022665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7972672497.

The product of its (nonzero) digits is 10497600, while the sum is 52.

The spelling of 165313363022665 in words is "one hundred sixty-five trillion, three hundred thirteen billion, three hundred sixty-three million, twenty-two thousand, six hundred sixty-five".