195102478228519 has 2 divisors, whose sum is σ = 195102478228520. Its totient is φ = 195102478228518.

The previous prime is 195102478228513. The next prime is 195102478228561. The reversal of 195102478228519 is 915822874201591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 195102478228519 - 2¹³ = 195102478220327 is a prime.

It is a super-2 number, since 2×195102478228519² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195102478228513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97551239114259 + 97551239114260.

It is an arithmetic number, because the mean of its divisors is an integer number (97551239114260).

Almost surely, 2^{195102478228519} is an apocalyptic number.

195102478228519 is a deficient number, since it is larger than the sum of its proper divisors (1).

195102478228519 is an equidigital number, since it uses as much as digits as its factorization.

195102478228519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29030400, while the sum is 64.

The spelling of 195102478228519 in words is "one hundred ninety-five trillion, one hundred two billion, four hundred seventy-eight million, two hundred twenty-eight thousand, five hundred nineteen".