16931481128 has 8 divisors (see below), whose sum is σ = 31746527130. Its totient is φ = 8465740560.

The previous prime is 16931481103. The next prime is 16931481137. The reversal of 16931481128 is 82118413961.

16931481128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 13627760644 + 3303720484 = 116738^2 + 57478^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1058217563 + ... + 1058217578.

Almost surely, 2^16931481128 is an apocalyptic number.

It is an amenable number.

16931481128 is a deficient number, since it is larger than the sum of its proper divisors (14815046002).

16931481128 is a wasteful number, since it uses less digits than its factorization.

16931481128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2116435147 (or 2116435143 counting only the distinct ones).

The product of its digits is 82944, while the sum is 44.

The spelling of 16931481128 in words is "sixteen billion, nine hundred thirty-one million, four hundred eighty-one thousand, one hundred twenty-eight".