196791606544 has 135 divisors (see below), whose sum is σ = 436715658063. Its totient is φ = 85854892032.

The previous prime is 196791606523. The next prime is 196791606619. The reversal of 196791606544 is 445606197691.

The square root of 196791606544 is 443612.

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

It can be written as a sum of positive squares in 4 ways, for example, as 14879120400 + 181912486144 = 121980^2 + 426512^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 438288432 + ... + 438288880.

Almost surely, 2^196791606544 is an apocalyptic number.

196791606544 is the 443612-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 196791606544

196791606544 is an abundant number, since it is smaller than the sum of its proper divisors (239924051519).

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

196791606544 is an equidigital number, since it uses as much as digits as its factorization.

196791606544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 196791606544 in words is "one hundred ninety-six billion, seven hundred ninety-one million, six hundred six thousand, five hundred forty-four".