16081182720 has 560 divisors, whose sum is σ = 59660594928. Its totient is φ = 4140564480.

The previous prime is 16081182697. The next prime is 16081182727. The reversal of 16081182720 is 2728118061.

16081182720 is a `hidden beast` number, since 1 + 608 + 1 + 1 + 8 + 27 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16081182727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 122757055 + ... + 122757185.

Almost surely, 2^16081182720 is an apocalyptic number.

16081182720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16081182720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29830297464).

16081182720 is an abundant number, since it is smaller than the sum of its proper divisors (43579412208).

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

16081182720 is an equidigital number, since it uses as much as digits as its factorization.

16081182720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The spelling of 16081182720 in words is "sixteen billion, eighty-one million, one hundred eighty-two thousand, seven hundred twenty".