165128141520 has 120 divisors (see below), whose sum is σ = 559939625856. Its totient is φ = 43606635264.

The previous prime is 165128141467. The next prime is 165128141543. The reversal of 165128141520 is 25141821561.

165128141520 is a `hidden beast` number, since 1 + 6 + 5 + 12 + 81 + 41 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1039164 + ... + 1187483.

Almost surely, 2^165128141520 is an apocalyptic number.

165128141520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165128141520 is an abundant number, since it is smaller than the sum of its proper divisors (394811484336).

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

165128141520 is a wasteful number, since it uses less digits than its factorization.

165128141520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226769 (or 2226760 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The spelling of 165128141520 in words is "one hundred sixty-five billion, one hundred twenty-eight million, one hundred forty-one thousand, five hundred twenty".