196561542327 has 12 divisors (see below), whose sum is σ = 276601839480. Its totient is φ = 124144131312.

The previous prime is 196561542323. The next prime is 196561542349. The reversal of 196561542327 is 723245165691.

It is not a de Polignac number, because 196561542327 - 2² = 196561542323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 196561542327.

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 polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90747552 + ... + 90749717.

It is an arithmetic number, because the mean of its divisors is an integer number (23050153290).

Almost surely, 2^196561542327 is an apocalyptic number.

196561542327 is a deficient number, since it is larger than the sum of its proper divisors (80040297153).

196561542327 is a wasteful number, since it uses less digits than its factorization.

196561542327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181497310 (or 181497291 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 51.

The spelling of 196561542327 in words is "one hundred ninety-six billion, five hundred sixty-one million, five hundred forty-two thousand, three hundred twenty-seven".