16599975480 has 576 divisors, whose sum is σ = 64534579200. Its totient is φ = 3683750400.

The previous prime is 16599975473. The next prime is 16599975487. The reversal of 16599975480 is 8457999561.

16599975480 is a `hidden beast` number, since 1 + 65 + 9 + 9 + 97 + 5 + 480 = 666.

It is an interprime number because it is at equal distance from previous prime (16599975473) and next prime (16599975487).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16599975487) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 25656517 + ... + 25657163.

It is an arithmetic number, because the mean of its divisors is an integer number (112039200).

Almost surely, 2^16599975480 is an apocalyptic number.

16599975480 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 16599975480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32267289600).

16599975480 is an abundant number, since it is smaller than the sum of its proper divisors (47934603720).

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

16599975480 is a wasteful number, since it uses less digits than its factorization.

16599975480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 24494400, while the sum is 63.

The spelling of 16599975480 in words is "sixteen billion, five hundred ninety-nine million, nine hundred seventy-five thousand, four hundred eighty".