196321345920 has 1280 divisors, whose sum is σ = 835602768000. Its totient is φ = 43893964800.

The previous prime is 196321345919. The next prime is 196321345921. The reversal of 196321345920 is 29543123691.

196321345920 is a `hidden beast` number, since 1 + 9 + 6 + 3 + 21 + 34 + 592 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (196321345919) and next prime (196321345921).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196321345921) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1084648230 + ... + 1084648410.

Almost surely, 2^196321345920 is an apocalyptic number.

196321345920 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 196321345920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (417801384000).

196321345920 is an abundant number, since it is smaller than the sum of its proper divisors (639281422080).

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

196321345920 is an equidigital number, since it uses as much as digits as its factorization.

196321345920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 196321345920 in words is "one hundred ninety-six billion, three hundred twenty-one million, three hundred forty-five thousand, nine hundred twenty".