165481164750 has 256 divisors, whose sum is σ = 474801979392. Its totient is φ = 37995408000.

The previous prime is 165481164743. The next prime is 165481164757. The reversal of 165481164750 is 57461184561.

It is an interprime number because it is at equal distance from previous prime (165481164743) and next prime (165481164757).

It is a self number, because there is not a number n which added to its sum of digits gives 165481164750.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165481164757) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 19540017 + ... + 19548483.

It is an arithmetic number, because the mean of its divisors is an integer number (1854695232).

Almost surely, 2^165481164750 is an apocalyptic number.

165481164750 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 165481164750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237400989696).

165481164750 is an abundant number, since it is smaller than the sum of its proper divisors (309320814642).

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

165481164750 is a wasteful number, since it uses less digits than its factorization.

165481164750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8624 (or 8614 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 165481164750 in words is "one hundred sixty-five billion, four hundred eighty-one million, one hundred sixty-four thousand, seven hundred fifty".