165955358360 has 128 divisors (see below), whose sum is σ = 412190519040. Its totient is φ = 59631936000.

The previous prime is 165955358357. The next prime is 165955358363. The reversal of 165955358360 is 63853559561.

It is an interprime number because it is at equal distance from previous prime (165955358357) and next prime (165955358363).

It is a junction number, because it is equal to n+sod(n) for n = 165955358296 and 165955358305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165955358363) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24305267 + ... + 24312093.

It is an arithmetic number, because the mean of its divisors is an integer number (3220238430).

Almost surely, 2^165955358360 is an apocalyptic number.

165955358360 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 165955358360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206095259520).

165955358360 is an abundant number, since it is smaller than the sum of its proper divisors (246235160680).

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

165955358360 is a wasteful number, since it uses less digits than its factorization.

165955358360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7497 (or 7493 counting only the distinct ones).

The product of its (nonzero) digits is 14580000, while the sum is 56.

The spelling of 165955358360 in words is "one hundred sixty-five billion, nine hundred fifty-five million, three hundred fifty-eight thousand, three hundred sixty".