195053916901 has 2 divisors, whose sum is σ = 195053916902. Its totient is φ = 195053916900.

The previous prime is 195053916881. The next prime is 195053916943. The reversal of 195053916901 is 109619350591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133463086276 + 61590830625 = 365326^2 + 248175^2 .

It is a cyclic number.

It is not a de Polignac number, because 195053916901 - 2²¹ = 195051819749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195053919901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97526958450 + 97526958451.

It is an arithmetic number, because the mean of its divisors is an integer number (97526958451).

Almost surely, 2^195053916901 is an apocalyptic number.

It is an amenable number.

195053916901 is a deficient number, since it is larger than the sum of its proper divisors (1).

195053916901 is an equidigital number, since it uses as much as digits as its factorization.

195053916901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 328050, while the sum is 49.

The spelling of 195053916901 in words is "one hundred ninety-five billion, fifty-three million, nine hundred sixteen thousand, nine hundred one".