195781053764 has 12 divisors (see below), whose sum is σ = 342619956588. Its totient is φ = 97889637600.

The previous prime is 195781053719. The next prime is 195781053781. The reversal of 195781053764 is 467350187591.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 107720491264 + 88060562500 = 328208^2 + 296750^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 679394 + ... + 923654.

It is an arithmetic number, because the mean of its divisors is an integer number (28551663049).

Almost surely, 2^195781053764 is an apocalyptic number.

It is an amenable number.

195781053764 is a deficient number, since it is larger than the sum of its proper divisors (146838902824).

195781053764 is a wasteful number, since it uses less digits than its factorization.

195781053764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444646 (or 444644 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 56.

The spelling of 195781053764 in words is "one hundred ninety-five billion, seven hundred eighty-one million, fifty-three thousand, seven hundred sixty-four".