16224120720 has 80 divisors (see below), whose sum is σ = 55883089920. Its totient is φ = 4326431616.

The previous prime is 16224120709. The next prime is 16224120749. The reversal of 16224120720 is 2702142261.

16224120720 is a `hidden beast` number, since 1 + 622 + 4 + 12 + 0 + 7 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3753424 + ... + 3757743.

It is an arithmetic number, because the mean of its divisors is an integer number (698538624).

Almost surely, 2^16224120720 is an apocalyptic number.

16224120720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16224120720 is an abundant number, since it is smaller than the sum of its proper divisors (39658969200).

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

16224120720 is a wasteful number, since it uses less digits than its factorization.

16224120720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7511189 (or 7511177 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

Adding to 16224120720 its reverse (2702142261), we get a palindrome (18926262981).

The spelling of 16224120720 in words is "sixteen billion, two hundred twenty-four million, one hundred twenty thousand, seven hundred twenty".