16522139684 has 12 divisors (see below), whose sum is σ = 28951944924. Its totient is φ = 8250155424.

The previous prime is 16522139671. The next prime is 16522139687. The reversal of 16522139684 is 48693122561.

16522139684 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 2 ways, for example, as 11348214784 + 5173924900 = 106528^2 + 71930^2 .

It is not an unprimeable number, because it can be changed into a prime (16522139687) 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 3 ways as a sum of consecutive naturals, for example, 2725199 + ... + 2731254.

It is an arithmetic number, because the mean of its divisors is an integer number (2412662077).

Almost surely, 2^16522139684 is an apocalyptic number.

It is an amenable number.

16522139684 is a deficient number, since it is larger than the sum of its proper divisors (12429805240).

16522139684 is a wasteful number, since it uses less digits than its factorization.

16522139684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5457214 (or 5457212 counting only the distinct ones).

The product of its digits is 622080, while the sum is 47.

The spelling of 16522139684 in words is "sixteen billion, five hundred twenty-two million, one hundred thirty-nine thousand, six hundred eighty-four".