195178136388 has 12 divisors (see below), whose sum is σ = 455415651600. Its totient is φ = 65059378792.

The previous prime is 195178136383. The next prime is 195178136401. The reversal of 195178136388 is 883631871591.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (195178136383) 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, 8132422338 + ... + 8132422361.

It is an arithmetic number, because the mean of its divisors is an integer number (37951304300).

Almost surely, 2^195178136388 is an apocalyptic number.

It is an amenable number.

195178136388 is an abundant number, since it is smaller than the sum of its proper divisors (260237515212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195178136388 is a wasteful number, since it uses less digits than its factorization.

195178136388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16264844706 (or 16264844704 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 60.

The spelling of 195178136388 in words is "one hundred ninety-five billion, one hundred seventy-eight million, one hundred thirty-six thousand, three hundred eighty-eight".