195021338881 has 8 divisors (see below), whose sum is σ = 204796713024. Its totient is φ = 185353980240.

The previous prime is 195021338851. The next prime is 195021338903. The reversal of 195021338881 is 188833120591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 195021338881 - 2⁵ = 195021338849 is a prime.

It is a super-2 number, since 2×195021338881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195021338801) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 27000175 + ... + 27007396.

It is an arithmetic number, because the mean of its divisors is an integer number (25599589128).

Almost surely, 2^195021338881 is an apocalyptic number.

It is an amenable number.

195021338881 is a deficient number, since it is larger than the sum of its proper divisors (9775374143).

195021338881 is a wasteful number, since it uses less digits than its factorization.

195021338881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54007751.

The product of its (nonzero) digits is 414720, while the sum is 49.

The spelling of 195021338881 in words is "one hundred ninety-five billion, twenty-one million, three hundred thirty-eight thousand, eight hundred eighty-one".