196268278778 has 80 divisors (see below), whose sum is σ = 359960168160. Its totient is φ = 79503278400.

The previous prime is 196268278777. The next prime is 196268278781. The reversal of 196268278778 is 877872862691.

196268278778 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (196268278777) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 18216533 + ... + 18227303.

It is an arithmetic number, because the mean of its divisors is an integer number (4499502102).

Almost surely, 2^196268278778 is an apocalyptic number.

196268278778 is a deficient number, since it is larger than the sum of its proper divisors (163691889382).

196268278778 is a wasteful number, since it uses less digits than its factorization.

196268278778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10865 (or 10826 counting only the distinct ones).

The product of its digits is 227598336, while the sum is 71.

The spelling of 196268278778 in words is "one hundred ninety-six billion, two hundred sixty-eight million, two hundred seventy-eight thousand, seven hundred seventy-eight".