165015015144 has 128 divisors (see below), whose sum is σ = 489301862400. Its totient is φ = 45374595840.

The previous prime is 165015015097. The next prime is 165015015167. The reversal of 165015015144 is 441510510561.

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, 1460739 + ... + 1569645.

It is an arithmetic number, because the mean of its divisors is an integer number (3822670800).

Almost surely, 2^165015015144 is an apocalyptic number.

165015015144 is a gapful number since it is divisible by the number (14) 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 165015015144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244650931200).

165015015144 is an abundant number, since it is smaller than the sum of its proper divisors (324286847256).

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

165015015144 is a wasteful number, since it uses less digits than its factorization.

165015015144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109263 (or 109259 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 33.

The spelling of 165015015144 in words is "one hundred sixty-five billion, fifteen million, fifteen thousand, one hundred forty-four".