195889775761 has 4 divisors (see below), whose sum is σ = 195891508800. Its totient is φ = 195888042724.

The previous prime is 195889775729. The next prime is 195889775789. The reversal of 195889775761 is 167577988591.

195889775761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 195889775761 - 2⁵ = 195889775729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195889775161) 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 3 ways as a sum of consecutive naturals, for example, 684181 + ... + 927298.

It is an arithmetic number, because the mean of its divisors is an integer number (48972877200).

Almost surely, 2^195889775761 is an apocalyptic number.

It is an amenable number.

195889775761 is a deficient number, since it is larger than the sum of its proper divisors (1733039).

195889775761 is a wasteful number, since it uses less digits than its factorization.

195889775761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733038.

The product of its digits is 266716800, while the sum is 73.

The spelling of 195889775761 in words is "one hundred ninety-five billion, eight hundred eighty-nine million, seven hundred seventy-five thousand, seven hundred sixty-one".