16215011280 has 960 divisors, whose sum is σ = 65515806720. Its totient is φ = 3561062400.

The previous prime is 16215011269. The next prime is 16215011353. The reversal of 16215011280 is 8211051261.

16215011280 is a `hidden beast` number, since 1 + 621 + 5 + 0 + 11 + 28 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 345000217 + ... + 345000263.

It is an arithmetic number, because the mean of its divisors is an integer number (68245632).

Almost surely, 2^16215011280 is an apocalyptic number.

16215011280 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 16215011280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32757903360).

16215011280 is an abundant number, since it is smaller than the sum of its proper divisors (49300795440).

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

16215011280 is a wasteful number, since it uses less digits than its factorization.

16215011280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The spelling of 16215011280 in words is "sixteen billion, two hundred fifteen million, eleven thousand, two hundred eighty".