196683996780 has 144 divisors (see below), whose sum is σ = 598855420800. Its totient is φ = 52251893760.

The previous prime is 196683996779. The next prime is 196683996787. The reversal of 196683996780 is 87699386691.

It is a junction number, because it is equal to n+sod(n) for n = 196683996699 and 196683996708.

It is not an unprimeable number, because it can be changed into a prime (196683996787) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 72070456 + ... + 72073184.

It is an arithmetic number, because the mean of its divisors is an integer number (4158718200).

Almost surely, 2^196683996780 is an apocalyptic number.

196683996780 is a gapful number since it is divisible by the number (10) 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 196683996780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299427710400).

196683996780 is an abundant number, since it is smaller than the sum of its proper divisors (402171424020).

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

196683996780 is a wasteful number, since it uses less digits than its factorization.

196683996780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104 (or 4099 counting only the distinct ones).

The product of its (nonzero) digits is 211631616, while the sum is 72.

The spelling of 196683996780 in words is "one hundred ninety-six billion, six hundred eighty-three million, nine hundred ninety-six thousand, seven hundred eighty".