165054261121500 has 96 divisors (see below), whose sum is σ = 483128361608256. Its totient is φ = 43786415308800.

The previous prime is 165054261121441. The next prime is 165054261121537. The reversal of 165054261121500 is 5121162450561.

It is a super-2 number, since 2×165054261121500² (a number of 29 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 284778309 + ... + 285357308.

It is an arithmetic number, because the mean of its divisors is an integer number (5032587100086).

Almost surely, 2^{165054261121500} is an apocalyptic number.

165054261121500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165054261121500 is an abundant number, since it is smaller than the sum of its proper divisors (318074100486756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165054261121500 is a wasteful number, since it uses less digits than its factorization.

165054261121500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570135832 (or 570135820 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 39.

The spelling of 165054261121500 in words is "one hundred sixty-five trillion, fifty-four billion, two hundred sixty-one million, one hundred twenty-one thousand, five hundred".