195023856722 has 6 divisors (see below), whose sum is σ = 292536721893. Its totient is φ = 97511616092.

The previous prime is 195023856719. The next prime is 195023856779. The reversal of 195023856722 is 227658320591.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 147917929201 + 47105927521 = 384601^2 + 217039^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=312269.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 468404 + ... + 780672.

Almost surely, 2^195023856722 is an apocalyptic number.

195023856722 is a deficient number, since it is larger than the sum of its proper divisors (97512865171).

195023856722 is an frugal number, since it uses more digits than its factorization.

195023856722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624540 (or 312271 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 50.

Multiplying 195023856722 by its sum of digits (50), we get a square (9751192836100 = 3122690²).

The spelling of 195023856722 in words is "one hundred ninety-five billion, twenty-three million, eight hundred fifty-six thousand, seven hundred twenty-two".