16081872840 has 960 divisors, whose sum is σ = 66740889600. Its totient is φ = 3448811520.

The previous prime is 16081872809. The next prime is 16081872899. The reversal of 16081872840 is 4827818061.

16081872840 is a `hidden beast` number, since 1 + 608 + 18 + 7 + 28 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 126628857 + ... + 126628983.

It is an arithmetic number, because the mean of its divisors is an integer number (69521760).

Almost surely, 2^16081872840 is an apocalyptic number.

16081872840 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 16081872840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33370444800).

16081872840 is an abundant number, since it is smaller than the sum of its proper divisors (50659016760).

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

16081872840 is a wasteful number, since it uses less digits than its factorization.

16081872840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The spelling of 16081872840 in words is "sixteen billion, eighty-one million, eight hundred seventy-two thousand, eight hundred forty".