16248222720 has 264 divisors, whose sum is σ = 57370548456. Its totient is φ = 4250468352.

The previous prime is 16248222713. The next prime is 16248222721. The reversal of 16248222720 is 2722284261.

16248222720 is a `hidden beast` number, since 1 + 624 + 8 + 2 + 2 + 2 + 7 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 238887936 + 16009334784 = 15456^2 + 126528^2 .

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 (16248222721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2438914 + ... + 2445566.

Almost surely, 2^16248222720 is an apocalyptic number.

16248222720 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 16248222720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28685274228).

16248222720 is an abundant number, since it is smaller than the sum of its proper divisors (41122325736).

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

16248222720 is a wasteful number, since it uses less digits than its factorization.

16248222720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6737 (or 6716 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The spelling of 16248222720 in words is "sixteen billion, two hundred forty-eight million, two hundred twenty-two thousand, seven hundred twenty".