165324556513556 has 48 divisors (see below), whose sum is σ = 316126628713728. Its totient is φ = 75026864140800.

The previous prime is 165324556513553. The next prime is 165324556513559. The reversal of 165324556513556 is 655315655423561.

It is an interprime number because it is at equal distance from previous prime (165324556513553) and next prime (165324556513559).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165324556513553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114231461 + ... + 115669683.

It is an arithmetic number, because the mean of its divisors is an integer number (6585971431536).

Almost surely, 2^{165324556513556} is an apocalyptic number.

It is an amenable number.

165324556513556 is a deficient number, since it is larger than the sum of its proper divisors (150802072200172).

165324556513556 is a wasteful number, since it uses less digits than its factorization.

165324556513556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442432 (or 1442430 counting only the distinct ones).

The product of its digits is 243000000, while the sum is 62.

The spelling of 165324556513556 in words is "one hundred sixty-five trillion, three hundred twenty-four billion, five hundred fifty-six million, five hundred thirteen thousand, five hundred fifty-six".