15881361120 has 192 divisors, whose sum is σ = 55683936000. Its totient is φ = 4227475968.

The previous prime is 15881361091. The next prime is 15881361131. The reversal of 15881361120 is 2116318851.

15881361120 is a `hidden beast` number, since 1 + 5 + 8 + 8 + 13 + 611 + 20 = 666.

15881361120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2671111 + ... + 2677049.

It is an arithmetic number, because the mean of its divisors is an integer number (290020500).

Almost surely, 2^15881361120 is an apocalyptic number.

15881361120 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 15881361120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27841968000).

15881361120 is an abundant number, since it is smaller than the sum of its proper divisors (39802574880).

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

15881361120 is a wasteful number, since it uses less digits than its factorization.

15881361120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6582 (or 6568 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

Adding to 15881361120 its reverse (2116318851), we get a palindrome (17997679971).

The spelling of 15881361120 in words is "fifteen billion, eight hundred eighty-one million, three hundred sixty-one thousand, one hundred twenty".