16382505181 has 16 divisors (see below), whose sum is σ = 18796210560. Its totient is φ = 13987249920.

The previous prime is 16382505169. The next prime is 16382505187. The reversal of 16382505181 is 18150528361.

It is a happy number.

It is not a de Polignac number, because 16382505181 - 2⁵ = 16382505149 is a prime.

It is a super-2 number, since 2×16382505181² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16382505187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1951465 + ... + 1959841.

It is an arithmetic number, because the mean of its divisors is an integer number (1174763160).

Almost surely, 2^16382505181 is an apocalyptic number.

It is an amenable number.

16382505181 is a deficient number, since it is larger than the sum of its proper divisors (2413705379).

16382505181 is an equidigital number, since it uses as much as digits as its factorization.

16382505181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9444.

The product of its (nonzero) digits is 57600, while the sum is 40.

The spelling of 16382505181 in words is "sixteen billion, three hundred eighty-two million, five hundred five thousand, one hundred eighty-one".