196781847321 has 4 divisors (see below), whose sum is σ = 262375796432. Its totient is φ = 131187898212.

The previous prime is 196781847319. The next prime is 196781847323. The reversal of 196781847321 is 123748187691.

196781847321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (196781847319) and next prime (196781847323).

It is not a de Polignac number, because 196781847321 - 2¹ = 196781847319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196781847323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32796974551 + ... + 32796974556.

It is an arithmetic number, because the mean of its divisors is an integer number (65593949108).

Almost surely, 2^196781847321 is an apocalyptic number.

It is an amenable number.

196781847321 is a deficient number, since it is larger than the sum of its proper divisors (65593949111).

196781847321 is an equidigital number, since it uses as much as digits as its factorization.

196781847321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65593949110.

The product of its digits is 4064256, while the sum is 57.

The spelling of 196781847321 in words is "one hundred ninety-six billion, seven hundred eighty-one million, eight hundred forty-seven thousand, three hundred twenty-one".