165156515001660 has 96 divisors (see below), whose sum is σ = 569154759409152. Its totient is φ = 34846209757440.

The previous prime is 165156515001619. The next prime is 165156515001661. The reversal of 165156515001660 is 66100515651561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165156515001661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15124217526 + ... + 15124228445.

It is an arithmetic number, because the mean of its divisors is an integer number (5928695410512).

Almost surely, 2^{165156515001660} is an apocalyptic number.

165156515001660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165156515001660 is an abundant number, since it is smaller than the sum of its proper divisors (403998244407492).

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

165156515001660 is a wasteful number, since it uses less digits than its factorization.

165156515001660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30248446003 (or 30248446001 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 48.

The spelling of 165156515001660 in words is "one hundred sixty-five trillion, one hundred fifty-six billion, five hundred fifteen million, one thousand, six hundred sixty".