165012858917504 has 192 divisors, whose sum is σ = 373206734712000. Its totient is φ = 72503186595840.

The previous prime is 165012858917503. The next prime is 165012858917513. The reversal of 165012858917504 is 405719858210561.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (165012858917503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104194172 + ... + 105766020.

It is an arithmetic number, because the mean of its divisors is an integer number (1943785076625).

Almost surely, 2^{165012858917504} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165012858917504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186603367356000).

165012858917504 is an abundant number, since it is smaller than the sum of its proper divisors (208193875794496).

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

165012858917504 is a wasteful number, since it uses less digits than its factorization.

165012858917504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572123 (or 1572098 counting only the distinct ones).

The product of its (nonzero) digits is 24192000, while the sum is 62.

The spelling of 165012858917504 in words is "one hundred sixty-five trillion, twelve billion, eight hundred fifty-eight million, nine hundred seventeen thousand, five hundred four".