195665522953 has 8 divisors (see below), whose sum is σ = 202419292160. Its totient is φ = 188939377440.

The previous prime is 195665522939. The next prime is 195665522959. The reversal of 195665522953 is 359225566591.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195665522953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195665522959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6891513 + ... + 6919846.

It is an arithmetic number, because the mean of its divisors is an integer number (25302411520).

Almost surely, 2^195665522953 is an apocalyptic number.

It is an amenable number.

195665522953 is a deficient number, since it is larger than the sum of its proper divisors (6753769207).

195665522953 is a wasteful number, since it uses less digits than its factorization.

195665522953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13811847.

The product of its digits is 21870000, while the sum is 58.

The spelling of 195665522953 in words is "one hundred ninety-five billion, six hundred sixty-five million, five hundred twenty-two thousand, nine hundred fifty-three".