195709474423 has 4 divisors (see below), whose sum is σ = 195717028000. Its totient is φ = 195701920848.

The previous prime is 195709474421. The next prime is 195709474427. The reversal of 195709474423 is 324474907591.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 195709474423 - 2¹ = 195709474421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195709474421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3737790 + ... + 3789787.

It is an arithmetic number, because the mean of its divisors is an integer number (48929257000).

Almost surely, 2^195709474423 is an apocalyptic number.

195709474423 is a deficient number, since it is larger than the sum of its proper divisors (7553577).

195709474423 is an equidigital number, since it uses as much as digits as its factorization.

195709474423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7553576.

The product of its (nonzero) digits is 7620480, while the sum is 55.

The spelling of 195709474423 in words is "one hundred ninety-five billion, seven hundred nine million, four hundred seventy-four thousand, four hundred twenty-three".