196561542326 has 16 divisors (see below), whose sum is σ = 300208182768. Its totient is φ = 96497872800.

The previous prime is 196561542323. The next prime is 196561542349. The reversal of 196561542326 is 623245165691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196561542323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1362185 + ... + 1499556.

It is an arithmetic number, because the mean of its divisors is an integer number (18763011423).

Almost surely, 2^196561542326 is an apocalyptic number.

196561542326 is a deficient number, since it is larger than the sum of its proper divisors (103646640442).

196561542326 is a wasteful number, since it uses less digits than its factorization.

196561542326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862367.

The product of its digits is 2332800, while the sum is 50.

The spelling of 196561542326 in words is "one hundred ninety-six billion, five hundred sixty-one million, five hundred forty-two thousand, three hundred twenty-six".