195491032213808 has 80 divisors (see below), whose sum is σ = 389413712147520. Its totient is φ = 95002803237888.

The previous prime is 195491032213801. The next prime is 195491032213837. The reversal of 195491032213808 is 808312230194591.

It is not an unprimeable number, because it can be changed into a prime (195491032213801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7020168941 + ... + 7020196787.

It is an arithmetic number, because the mean of its divisors is an integer number (4867671401844).

Almost surely, 2^{195491032213808} is an apocalyptic number.

It is an amenable number.

195491032213808 is a deficient number, since it is larger than the sum of its proper divisors (193922679933712).

195491032213808 is a wasteful number, since it uses less digits than its factorization.

195491032213808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40054 (or 40048 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 56.

The spelling of 195491032213808 in words is "one hundred ninety-five trillion, four hundred ninety-one billion, thirty-two million, two hundred thirteen thousand, eight hundred eight".