195975497551 has 8 divisors (see below), whose sum is σ = 196286191040. Its totient is φ = 195664902048.

The previous prime is 195975497537. The next prime is 195975497581. The reversal of 195975497551 is 155794579591.

195975497551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 195975497551 - 2³¹ = 193828013903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195975497581) 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 7 ways as a sum of consecutive naturals, for example, 4684810 + ... + 4726456.

It is an arithmetic number, because the mean of its divisors is an integer number (24535773880).

Almost surely, 2^195975497551 is an apocalyptic number.

195975497551 is a deficient number, since it is larger than the sum of its proper divisors (310693489).

195975497551 is an equidigital number, since it uses as much as digits as its factorization.

195975497551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48993.

The product of its digits is 89302500, while the sum is 67.

The spelling of 195975497551 in words is "one hundred ninety-five billion, nine hundred seventy-five million, four hundred ninety-seven thousand, five hundred fifty-one".