165160053640 has 64 divisors (see below), whose sum is σ = 380395699200. Its totient is φ = 64503301632.

The previous prime is 165160053623. The next prime is 165160053649. The reversal of 165160053640 is 46350061561.

It is a self number, because there is not a number n which added to its sum of digits gives 165160053640.

It is not an unprimeable number, because it can be changed into a prime (165160053649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4935204 + ... + 4968556.

It is an arithmetic number, because the mean of its divisors is an integer number (5943682800).

Almost surely, 2^165160053640 is an apocalyptic number.

165160053640 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 165160053640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190197849600).

165160053640 is an abundant number, since it is smaller than the sum of its proper divisors (215235645560).

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

165160053640 is a wasteful number, since it uses less digits than its factorization.

165160053640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36286 (or 36282 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 165160053640 in words is "one hundred sixty-five billion, one hundred sixty million, fifty-three thousand, six hundred forty".