165555660050 has 96 divisors (see below), whose sum is σ = 339319960704. Its totient is φ = 59596992000.

The previous prime is 165555660041. The next prime is 165555660059. The reversal of 165555660050 is 50066555561.

It is an interprime number because it is at equal distance from previous prime (165555660041) and next prime (165555660059).

It is a junction number, because it is equal to n+sod(n) for n = 165555659983 and 165555660010.

It is not an unprimeable number, because it can be changed into a prime (165555660059) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24260939 + ... + 24267761.

It is an arithmetic number, because the mean of its divisors is an integer number (3534582924).

Almost surely, 2^165555660050 is an apocalyptic number.

165555660050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165555660050 is an abundant number, since it is smaller than the sum of its proper divisors (173764300654).

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

165555660050 is a wasteful number, since it uses less digits than its factorization.

165555660050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7284 (or 7279 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 44.

The spelling of 165555660050 in words is "one hundred sixty-five billion, five hundred fifty-five million, six hundred sixty thousand, fifty".