196661073772 has 24 divisors (see below), whose sum is σ = 354664837296. Its totient is φ = 95346404928.

The previous prime is 196661073761. The next prime is 196661073779. The reversal of 196661073772 is 277370166691.

It is not an unprimeable number, because it can be changed into a prime (196661073779) 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, 2224198 + ... + 2310925.

It is an arithmetic number, because the mean of its divisors is an integer number (14777701554).

Almost surely, 2^196661073772 is an apocalyptic number.

It is an amenable number.

196661073772 is a deficient number, since it is larger than the sum of its proper divisors (158003763524).

196661073772 is a wasteful number, since it uses less digits than its factorization.

196661073772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4535457 (or 4535455 counting only the distinct ones).

The product of its (nonzero) digits is 4000752, while the sum is 55.

The spelling of 196661073772 in words is "one hundred ninety-six billion, six hundred sixty-one million, seventy-three thousand, seven hundred seventy-two".