196855473778 has 16 divisors (see below), whose sum is σ = 298380176640. Its totient is φ = 97395774336.

The previous prime is 196855473769. The next prime is 196855473883. The reversal of 196855473778 is 877374558691.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1045875 + ... + 1219657.

It is an arithmetic number, because the mean of its divisors is an integer number (18648761040).

Almost surely, 2^196855473778 is an apocalyptic number.

196855473778 is a deficient number, since it is larger than the sum of its proper divisors (101524702862).

196855473778 is a wasteful number, since it uses less digits than its factorization.

196855473778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179721.

The product of its digits is 355622400, while the sum is 70.

The spelling of 196855473778 in words is "one hundred ninety-six billion, eight hundred fifty-five million, four hundred seventy-three thousand, seven hundred seventy-eight".