16542331326 has 32 divisors (see below), whose sum is σ = 36766548000. Its totient is φ = 5513238720.

The previous prime is 16542331283. The next prime is 16542331343. The reversal of 16542331326 is 62313324561.

It is a congruent number.

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, 383500 + ... + 424448.

It is an arithmetic number, because the mean of its divisors is an integer number (1148954625).

Almost surely, 2^16542331326 is an apocalyptic number.

16542331326 is an abundant number, since it is smaller than the sum of its proper divisors (20224216674).

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

16542331326 is a wasteful number, since it uses less digits than its factorization.

16542331326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48441 (or 48435 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

Adding to 16542331326 its reverse (62313324561), we get a palindrome (78855655887).

The spelling of 16542331326 in words is "sixteen billion, five hundred forty-two million, three hundred thirty-one thousand, three hundred twenty-six".