195477668842 has 4 divisors (see below), whose sum is σ = 293216503266. Its totient is φ = 97738834420.

The previous prime is 195477668797. The next prime is 195477668873. The reversal of 195477668842 is 248866774591.

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

It can be written as a sum of positive squares in only one way, i.e., 103310173561 + 92167495281 = 321419^2 + 303591^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48869417209 + ... + 48869417212.

Almost surely, 2^195477668842 is an apocalyptic number.

195477668842 is a deficient number, since it is larger than the sum of its proper divisors (97738834424).

195477668842 is an equidigital number, since it uses as much as digits as its factorization.

195477668842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97738834423.

The product of its digits is 162570240, while the sum is 67.

The spelling of 195477668842 in words is "one hundred ninety-five billion, four hundred seventy-seven million, six hundred sixty-eight thousand, eight hundred forty-two".