195272095691 has 16 divisors (see below), whose sum is σ = 210599682048. Its totient is φ = 180529456800.

The previous prime is 195272095687. The next prime is 195272095709. The reversal of 195272095691 is 196590272591.

It is a cyclic number.

It is not a de Polignac number, because 195272095691 - 2² = 195272095687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195272035691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396446 + ... + 740076.

It is an arithmetic number, because the mean of its divisors is an integer number (13162480128).

Almost surely, 2^195272095691 is an apocalyptic number.

195272095691 is a deficient number, since it is larger than the sum of its proper divisors (15327586357).

195272095691 is a wasteful number, since it uses less digits than its factorization.

195272095691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344482.

The product of its (nonzero) digits is 3061800, while the sum is 56.

The spelling of 195272095691 in words is "one hundred ninety-five billion, two hundred seventy-two million, ninety-five thousand, six hundred ninety-one".