16215816960 has 648 divisors, whose sum is σ = 68157180000. Its totient is φ = 3542482944.

The previous prime is 16215816949. The next prime is 16215816977. The reversal of 16215816960 is 6961851261.

16215816960 is a `hidden beast` number, since 1 + 6 + 2 + 1 + 581 + 6 + 9 + 60 = 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 71 ways as a sum of consecutive naturals, for example, 12982416 + ... + 12983664.

Almost surely, 2^16215816960 is an apocalyptic number.

16215816960 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 16215816960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34078590000).

16215816960 is an abundant number, since it is smaller than the sum of its proper divisors (51941363040).

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

16215816960 is a wasteful number, since it uses less digits than its factorization.

16215816960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313 (or 1289 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 16215816960 in words is "sixteen billion, two hundred fifteen million, eight hundred sixteen thousand, nine hundred sixty".