195878975623 has 16 divisors (see below), whose sum is σ = 211105492992. Its totient is φ = 181218312000.

The previous prime is 195878975603. The next prime is 195878975627. The reversal of 195878975623 is 326579878591.

It is a de Polignac number, because none of the positive numbers 2^k-195878975623 is a prime.

It is a super-2 number, since 2×195878975623² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195878975627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1230483 + ... + 1380523.

It is an arithmetic number, because the mean of its divisors is an integer number (13194093312).

Almost surely, 2^195878975623 is an apocalyptic number.

195878975623 is a deficient number, since it is larger than the sum of its proper divisors (15226517369).

195878975623 is a wasteful number, since it uses less digits than its factorization.

195878975623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151926.

The product of its digits is 228614400, while the sum is 70.

The spelling of 195878975623 in words is "one hundred ninety-five billion, eight hundred seventy-eight million, nine hundred seventy-five thousand, six hundred twenty-three".