16523132840 has 64 divisors (see below), whose sum is σ = 39739714560. Its totient is φ = 6167687680.

The previous prime is 16523132839. The next prime is 16523132869. The reversal of 16523132840 is 4823132561.

It is a self number, because there is not a number n which added to its sum of digits gives 16523132840.

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, 181304 + ... + 256743.

It is an arithmetic number, because the mean of its divisors is an integer number (620933040).

Almost surely, 2^16523132840 is an apocalyptic number.

16523132840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16523132840 is an abundant number, since it is smaller than the sum of its proper divisors (23216581720).

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

16523132840 is a wasteful number, since it uses less digits than its factorization.

16523132840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438122 (or 438118 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 16523132840 in words is "sixteen billion, five hundred twenty-three million, one hundred thirty-two thousand, eight hundred forty".