196888557561 has 8 divisors (see below), whose sum is σ = 262520523360. Its totient is φ = 131257815072.

The previous prime is 196888557553. The next prime is 196888557589. The reversal of 196888557561 is 165755888691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 196888557561 - 2³ = 196888557553 is a prime.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (196888557361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179950 + ... + 652808.

It is an arithmetic number, because the mean of its divisors is an integer number (32815065420).

Almost surely, 2^196888557561 is an apocalyptic number.

It is an amenable number.

196888557561 is a deficient number, since it is larger than the sum of its proper divisors (65631965799).

196888557561 is a wasteful number, since it uses less digits than its factorization.

196888557561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611655.

The product of its digits is 145152000, while the sum is 69.

The spelling of 196888557561 in words is "one hundred ninety-six billion, eight hundred eighty-eight million, five hundred fifty-seven thousand, five hundred sixty-one".