16561092928 has 56 divisors (see below), whose sum is σ = 33659429760. Its totient is φ = 8080343040.

The previous prime is 16561092923. The next prime is 16561092941. The reversal of 16561092928 is 82929016561.

16561092928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16561092928² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16561092923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3875433 + ... + 3879703.

Almost surely, 2^16561092928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16561092928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16829714880).

16561092928 is an abundant number, since it is smaller than the sum of its proper divisors (17098336832).

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

16561092928 is a wasteful number, since it uses less digits than its factorization.

16561092928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5735 (or 5725 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 49.

The spelling of 16561092928 in words is "sixteen billion, five hundred sixty-one million, ninety-two thousand, nine hundred twenty-eight".