195718723201 has 2 divisors, whose sum is σ = 195718723202. Its totient is φ = 195718723200.

The previous prime is 195718723133. The next prime is 195718723217. The reversal of 195718723201 is 102327817591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195718644801 + 78400 = 442401^2 + 280^2 .

It is an emirp because it is prime and its reverse (102327817591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195718723201 - 2¹⁷ = 195718592129 is a prime.

It is a super-2 number, since 2×195718723201² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (195718723901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97859361600 + 97859361601.

It is an arithmetic number, because the mean of its divisors is an integer number (97859361601).

Almost surely, 2^195718723201 is an apocalyptic number.

It is an amenable number.

195718723201 is a deficient number, since it is larger than the sum of its proper divisors (1).

195718723201 is an equidigital number, since it uses as much as digits as its factorization.

195718723201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 46.

The spelling of 195718723201 in words is "one hundred ninety-five billion, seven hundred eighteen million, seven hundred twenty-three thousand, two hundred one".