195720742478273 has 8 divisors (see below), whose sum is σ = 200832335944320. Its totient is φ = 190648620776880.

The previous prime is 195720742478267. The next prime is 195720742478281. The reversal of 195720742478273 is 372874247027591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 195720742478273 - 2¹² = 195720742474177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (195720742478263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9867931118 + ... + 9867950951.

It is an arithmetic number, because the mean of its divisors is an integer number (25104041993040).

Almost surely, 2^{195720742478273} is an apocalyptic number.

It is an amenable number.

195720742478273 is a deficient number, since it is larger than the sum of its proper divisors (5111593466047).

195720742478273 is a wasteful number, since it uses less digits than its factorization.

195720742478273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19735882327.

The product of its (nonzero) digits is 331914240, while the sum is 68.

The spelling of 195720742478273 in words is "one hundred ninety-five trillion, seven hundred twenty billion, seven hundred forty-two million, four hundred seventy-eight thousand, two hundred seventy-three".