195356910783239 has 2 divisors, whose sum is σ = 195356910783240. Its totient is φ = 195356910783238.

The previous prime is 195356910783197. The next prime is 195356910783241. The reversal of 195356910783239 is 932387019653591.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195356910783239 is a prime.

It is a super-2 number, since 2×195356910783239² (a number of 29 digits) contains 22 as substring.

Together with 195356910783241, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195356910783259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97678455391619 + 97678455391620.

It is an arithmetic number, because the mean of its divisors is an integer number (97678455391620).

Almost surely, 2^{195356910783239} is an apocalyptic number.

195356910783239 is a deficient number, since it is larger than the sum of its proper divisors (1).

195356910783239 is an equidigital number, since it uses as much as digits as its factorization.

195356910783239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 330674400, while the sum is 71.

The spelling of 195356910783239 in words is "one hundred ninety-five trillion, three hundred fifty-six billion, nine hundred ten million, seven hundred eighty-three thousand, two hundred thirty-nine".