196776678912 has 160 divisors (see below), whose sum is σ = 579719859840. Its totient is φ = 58812088320.

The previous prime is 196776678859. The next prime is 196776678961. The reversal of 196776678912 is 219876677691.

It is a happy number.

It is a super-2 number, since 2×196776678912² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1153639 + ... + 1313177.

It is an arithmetic number, because the mean of its divisors is an integer number (3623249124).

Almost surely, 2^196776678912 is an apocalyptic number.

196776678912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 196776678912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289859929920).

196776678912 is an abundant number, since it is smaller than the sum of its proper divisors (382943180928).

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

196776678912 is a wasteful number, since it uses less digits than its factorization.

196776678912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159644 (or 159628 counting only the distinct ones).

The product of its digits is 96018048, while the sum is 69.

The spelling of 196776678912 in words is "one hundred ninety-six billion, seven hundred seventy-six million, six hundred seventy-eight thousand, nine hundred twelve".