196978869728 has 24 divisors (see below), whose sum is σ = 400311898560. Its totient is φ = 95312355840.

The previous prime is 196978869683. The next prime is 196978869743. The reversal of 196978869728 is 827968879691.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99282713 + ... + 99284696.

It is an arithmetic number, because the mean of its divisors is an integer number (16679662440).

Almost surely, 2^196978869728 is an apocalyptic number.

It is an amenable number.

196978869728 is an abundant number, since it is smaller than the sum of its proper divisors (203333028832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

196978869728 is a wasteful number, since it uses less digits than its factorization.

196978869728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198567450 (or 198567442 counting only the distinct ones).

The product of its digits is 1316818944, while the sum is 80.

The spelling of 196978869728 in words is "one hundred ninety-six billion, nine hundred seventy-eight million, eight hundred sixty-nine thousand, seven hundred twenty-eight".