16724551680 has 384 divisors, whose sum is σ = 59935075200. Its totient is φ = 4423680000.

The previous prime is 16724551663. The next prime is 16724551741. The reversal of 16724551680 is 8615542761.

16724551680 is a `hidden beast` number, since 16 + 7 + 2 + 4 + 551 + 6 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

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 31 ways as a sum of consecutive naturals, for example, 66631555 + ... + 66631805.

It is an arithmetic number, because the mean of its divisors is an integer number (156080925).

Almost surely, 2^16724551680 is an apocalyptic number.

16724551680 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 16724551680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29967537600).

16724551680 is an abundant number, since it is smaller than the sum of its proper divisors (43210523520).

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

16724551680 is a wasteful number, since it uses less digits than its factorization.

16724551680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528 (or 502 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 16724551680 in words is "sixteen billion, seven hundred twenty-four million, five hundred fifty-one thousand, six hundred eighty".