196957635840 has 432 divisors, whose sum is σ = 819799344000. Its totient is φ = 42649141248.

The previous prime is 196957635803. The next prime is 196957635881. The reversal of 196957635840 is 48536759691.

196957635840 is a `hidden beast` number, since 1 + 9 + 6 + 9 + 576 + 3 + 58 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

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 47 ways as a sum of consecutive naturals, for example, 1467886 + ... + 1596434.

Almost surely, 2^196957635840 is an apocalyptic number.

196957635840 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 196957635840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409899672000).

196957635840 is an abundant number, since it is smaller than the sum of its proper divisors (622841708160).

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

196957635840 is a wasteful number, since it uses less digits than its factorization.

196957635840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128602 (or 128585 counting only the distinct ones).

The product of its (nonzero) digits is 48988800, while the sum is 63.

The spelling of 196957635840 in words is "one hundred ninety-six billion, nine hundred fifty-seven million, six hundred thirty-five thousand, eight hundred forty".