165000066672 has 160 divisors (see below), whose sum is σ = 489868646400. Its totient is φ = 46879709184.

The previous prime is 165000066667. The next prime is 165000066683. The reversal of 165000066672 is 276660000561.

It is a self number, because there is not a number n which added to its sum of digits gives 165000066672.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102547404 + ... + 102549012.

It is an arithmetic number, because the mean of its divisors is an integer number (3061679040).

Almost surely, 2^165000066672 is an apocalyptic number.

165000066672 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 165000066672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244934323200).

165000066672 is an abundant number, since it is smaller than the sum of its proper divisors (324868579728).

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

165000066672 is a wasteful number, since it uses less digits than its factorization.

165000066672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143 (or 3137 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The spelling of 165000066672 in words is "one hundred sixty-five billion, sixty-six thousand, six hundred seventy-two".