16718652720 has 1280 divisors, whose sum is σ = 78012149760. Its totient is φ = 3224862720.

The previous prime is 16718652677. The next prime is 16718652721. The reversal of 16718652720 is 2725681761.

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

It is not an unprimeable number, because it can be changed into a prime (16718652721) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 229022604 + ... + 229022676.

It is an arithmetic number, because the mean of its divisors is an integer number (60946992).

Almost surely, 2^16718652720 is an apocalyptic number.

16718652720 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 16718652720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39006074880).

16718652720 is an abundant number, since it is smaller than the sum of its proper divisors (61293497040).

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

16718652720 is a wasteful number, since it uses less digits than its factorization.

16718652720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 16718652720 in words is "sixteen billion, seven hundred eighteen million, six hundred fifty-two thousand, seven hundred twenty".