165821650150 has 48 divisors (see below), whose sum is σ = 332195238144. Its totient is φ = 61218766080.

The previous prime is 165821650133. The next prime is 165821650151. The reversal of 165821650150 is 51056128561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165821650151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9600322 + ... + 9617578.

It is an arithmetic number, because the mean of its divisors is an integer number (6920734128).

Almost surely, 2^165821650150 is an apocalyptic number.

165821650150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165821650150 is an abundant number, since it is smaller than the sum of its proper divisors (166373587994).

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

165821650150 is a wasteful number, since it uses less digits than its factorization.

165821650150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32065 (or 32060 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 40.

The spelling of 165821650150 in words is "one hundred sixty-five billion, eight hundred twenty-one million, six hundred fifty thousand, one hundred fifty".