196421378384 has 80 divisors (see below), whose sum is σ = 476161773696. Its totient is φ = 76255334400.

The previous prime is 196421378369. The next prime is 196421378467. The reversal of 196421378384 is 483873124691.

It is a Harshad number since it is a multiple of its sum of digits (56).

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, 62504 + ... + 629880.

Almost surely, 2^196421378384 is an apocalyptic number.

196421378384 is a gapful number since it is divisible by the number (14) 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 196421378384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238080886848).

196421378384 is an abundant number, since it is smaller than the sum of its proper divisors (279740395312).

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

196421378384 is a wasteful number, since it uses less digits than its factorization.

196421378384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567684 (or 567678 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 56.

The spelling of 196421378384 in words is "one hundred ninety-six billion, four hundred twenty-one million, three hundred seventy-eight thousand, three hundred eighty-four".