196023256128 has 168 divisors, whose sum is σ = 643177296320. Its totient is φ = 55915453440.

The previous prime is 196023256021. The next prime is 196023256181. The reversal of 196023256128 is 821652320691.

196023256128 is a `hidden beast` number, since 1 + 9 + 6 + 0 + 2 + 3 + 25 + 612 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2456538 + ... + 2535078.

Almost surely, 2^196023256128 is an apocalyptic number.

196023256128 is a gapful number since it is divisible by the number (18) 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 196023256128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321588648160).

196023256128 is an abundant number, since it is smaller than the sum of its proper divisors (447154040192).

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

196023256128 is a wasteful number, since it uses less digits than its factorization.

196023256128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79185 (or 79172 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 196023256128 in words is "one hundred ninety-six billion, twenty-three million, two hundred fifty-six thousand, one hundred twenty-eight".