16516594380 has 288 divisors, whose sum is σ = 55180742400. Its totient is φ = 3666516480.

The previous prime is 16516594361. The next prime is 16516594399. The reversal of 16516594380 is 8349561561.

It is an interprime number because it is at equal distance from previous prime (16516594361) and next prime (16516594399).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13118191 + ... + 13119449.

It is an arithmetic number, because the mean of its divisors is an integer number (191599800).

Almost surely, 2^16516594380 is an apocalyptic number.

16516594380 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 16516594380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27590371200).

16516594380 is an abundant number, since it is smaller than the sum of its proper divisors (38664148020).

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

16516594380 is a wasteful number, since it uses less digits than its factorization.

16516594380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445 (or 1432 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 48.

The spelling of 16516594380 in words is "sixteen billion, five hundred sixteen million, five hundred ninety-four thousand, three hundred eighty".