165406611150 has 288 divisors, whose sum is σ = 499040380800. Its totient is φ = 38925100800.

The previous prime is 165406611143. The next prime is 165406611151. The reversal of 165406611150 is 51116604561.

165406611150 is a `hidden beast` number, since 1 + 6 + 540 + 6 + 61 + 1 + 1 + 50 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165406611151) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 113369121 + ... + 113370579.

It is an arithmetic number, because the mean of its divisors is an integer number (1732779100).

Almost surely, 2^165406611150 is an apocalyptic number.

165406611150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 165406611150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249520190400).

165406611150 is an abundant number, since it is smaller than the sum of its proper divisors (333633769650).

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

165406611150 is a wasteful number, since it uses less digits than its factorization.

165406611150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2144 (or 2136 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 165406611150 in words is "one hundred sixty-five billion, four hundred six million, six hundred eleven thousand, one hundred fifty".