196871251649436 has 384 divisors, whose sum is σ = 660221889331200. Its totient is φ = 49307299050240.

The previous prime is 196871251649419. The next prime is 196871251649447. The reversal of 196871251649436 is 634946152178691.

196871251649436 is a `hidden beast` number, since 1 + 9 + 6 + 8 + 7 + 1 + 25 + 164 + 9 + 436 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 28287231 + ... + 34553001.

It is an arithmetic number, because the mean of its divisors is an integer number (1719327836800).

Almost surely, 2^{196871251649436} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 196871251649436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330110944665600).

196871251649436 is an abundant number, since it is smaller than the sum of its proper divisors (463350637681764).

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

196871251649436 is a wasteful number, since it uses less digits than its factorization.

196871251649436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6265966 (or 6265958 counting only the distinct ones).

The product of its digits is 470292480, while the sum is 72.

The spelling of 196871251649436 in words is "one hundred ninety-six trillion, eight hundred seventy-one billion, two hundred fifty-one million, six hundred forty-nine thousand, four hundred thirty-six".