165156615065652 has 192 divisors, whose sum is σ = 464207302809600. Its totient is φ = 44645270100480.

The previous prime is 165156615065597. The next prime is 165156615065693. The reversal of 165156615065652 is 256560516651561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7192281123 + ... + 7192304085.

It is an arithmetic number, because the mean of its divisors is an integer number (2417746368800).

Almost surely, 2^{165156615065652} is an apocalyptic number.

165156615065652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165156615065652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232103651404800).

165156615065652 is an abundant number, since it is smaller than the sum of its proper divisors (299050687743948).

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

165156615065652 is a wasteful number, since it uses less digits than its factorization.

165156615065652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28726 (or 28724 counting only the distinct ones).

The product of its (nonzero) digits is 48600000, while the sum is 60.

The spelling of 165156615065652 in words is "one hundred sixty-five trillion, one hundred fifty-six billion, six hundred fifteen million, sixty-five thousand, six hundred fifty-two".