195851796026436 has 243 divisors, whose sum is σ = 578106794419063. Its totient is φ = 55853431434240.

The previous prime is 195851796026413. The next prime is 195851796026437. The reversal of 195851796026436 is 634620697158591.

It is a happy number.

The square root of 195851796026436 is 13994706.

It is a perfect power (a square), and thus also a powerful number.

195851796026436 is a `hidden beast` number, since 1 + 9 + 5 + 8 + 5 + 1 + 7 + 9 + 602 + 6 + 4 + 3 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 44957105460036 + 150894690566400 = 6705006^2 + 12283920^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195851796026437) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 15702053896 + ... + 15702066368.

It is a 1-persistent number, because it is pandigital, but 2⋅195851796026436 = 391703592052872 is not.

Almost surely, 2^{195851796026436} is an apocalyptic number.

195851796026436 is the 13994706-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195851796026436

195851796026436 is an abundant number, since it is smaller than the sum of its proper divisors (382254998392627).

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

195851796026436 is a wasteful number, since it uses less digits than its factorization.

195851796026436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25012 (or 12506 counting only the distinct ones).

The product of its (nonzero) digits is 587865600, while the sum is 72.

The spelling of 195851796026436 in words is "one hundred ninety-five trillion, eight hundred fifty-one billion, seven hundred ninety-six million, twenty-six thousand, four hundred thirty-six".