196168777728 has 864 divisors, whose sum is σ = 714035589120. Its totient is φ = 46714060800.

The previous prime is 196168777723. The next prime is 196168777733. The reversal of 196168777728 is 827777861691.

It is an interprime number because it is at equal distance from previous prime (196168777723) and next prime (196168777733).

It is not an unprimeable number, because it can be changed into a prime (196168777723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6328025073 + ... + 6328025103.

It is an arithmetic number, because the mean of its divisors is an integer number (826430080).

Almost surely, 2^196168777728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 196168777728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (357017794560).

196168777728 is an abundant number, since it is smaller than the sum of its proper divisors (517866811392).

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

196168777728 is an equidigital number, since it uses as much as digits as its factorization.

196168777728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 73 counting only the distinct ones).

The product of its digits is 99574272, while the sum is 69.

The spelling of 196168777728 in words is "one hundred ninety-six billion, one hundred sixty-eight million, seven hundred seventy-seven thousand, seven hundred twenty-eight".