195961788722 has 54 divisors (see below), whose sum is σ = 346245824151. Its totient is φ = 82937514240.

The previous prime is 195961788721. The next prime is 195961788787. The reversal of 195961788722 is 227887169591.

It can be written as a sum of positive squares in 5 ways, for example, as 53675159041 + 142286629681 = 231679^2 + 377209^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=313019.

It is a Duffinian number.

Its product of digits (30481920) is a multiple of the sum of its prime divisors (567).

It is not an unprimeable number, because it can be changed into a prime (195961788721) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 425079572 + ... + 425080032.

Almost surely, 2^195961788722 is an apocalyptic number.

195961788722 is a deficient number, since it is larger than the sum of its proper divisors (150284035429).

195961788722 is an frugal number, since it uses more digits than its factorization.

195961788722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132 (or 567 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 65.

The spelling of 195961788722 in words is "one hundred ninety-five billion, nine hundred sixty-one million, seven hundred eighty-eight thousand, seven hundred twenty-two".