196986595509 has 48 divisors (see below), whose sum is σ = 311875574400. Its totient is φ = 118820782080.

The previous prime is 196986595489. The next prime is 196986595537. The reversal of 196986595509 is 905595689691.

It is a happy number.

196986595509 is a `hidden beast` number, since 1 + 9 + 6 + 9 + 8 + 65 + 9 + 550 + 9 = 666.

It is not a de Polignac number, because 196986595509 - 2⁷ = 196986595381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196986595909) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19979509 + ... + 19989365.

It is an arithmetic number, because the mean of its divisors is an integer number (6497407800).

Almost surely, 2^196986595509 is an apocalyptic number.

It is an amenable number.

196986595509 is a deficient number, since it is larger than the sum of its proper divisors (114888978891).

196986595509 is a wasteful number, since it uses less digits than its factorization.

196986595509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10810 (or 10807 counting only the distinct ones).

The product of its (nonzero) digits is 236196000, while the sum is 72.

The spelling of 196986595509 in words is "one hundred ninety-six billion, nine hundred eighty-six million, five hundred ninety-five thousand, five hundred nine".