16513128044 has 12 divisors (see below), whose sum is σ = 33026256144. Its totient is φ = 7077054864.

The previous prime is 16513128043. The next prime is 16513128053. The reversal of 16513128044 is 44082131561.

16513128044 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 16513127995 and 16513128013.

It is not an unprimeable number, because it can be changed into a prime (16513128043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294877259 + ... + 294877314.

It is an arithmetic number, because the mean of its divisors is an integer number (2752188012).

Almost surely, 2^16513128044 is an apocalyptic number.

16513128044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16513128044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16513128044 is a wasteful number, since it uses less digits than its factorization.

16513128044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589754584 (or 589754582 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 16513128044 in words is "sixteen billion, five hundred thirteen million, one hundred twenty-eight thousand, forty-four".