165151666515000 has 640 divisors, whose sum is σ = 580506094586880. Its totient is φ = 38796768000000.

The previous prime is 165151666514971. The next prime is 165151666515001. The reversal of 165151666515000 is 515666151561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165151666515001) by changing a digit.

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 159 ways as a sum of consecutive naturals, for example, 783149574 + ... + 783360426.

It is an arithmetic number, because the mean of its divisors is an integer number (907040772792).

Almost surely, 2^{165151666515000} is an apocalyptic number.

165151666515000 is a gapful number since it is divisible by the number (10) 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 165151666515000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290253047293440).

165151666515000 is an abundant number, since it is smaller than the sum of its proper divisors (415354428071880).

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

165151666515000 is a wasteful number, since it uses less digits than its factorization.

165151666515000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211041 (or 211022 counting only the distinct ones).

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

The spelling of 165151666515000 in words is "one hundred sixty-five trillion, one hundred fifty-one billion, six hundred sixty-six million, five hundred fifteen thousand".