195172965613 has 16 divisors (see below), whose sum is σ = 198360796480. Its totient is φ = 192012581376.

The previous prime is 195172965601. The next prime is 195172965667. The reversal of 195172965613 is 316569271591.

It is a cyclic number.

It is not a de Polignac number, because 195172965613 - 2²¹ = 195170868461 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 (195172962613) 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, 11277595 + ... + 11294887.

It is an arithmetic number, because the mean of its divisors is an integer number (12397549780).

Almost surely, 2^195172965613 is an apocalyptic number.

It is an amenable number.

195172965613 is a deficient number, since it is larger than the sum of its proper divisors (3187830867).

195172965613 is a wasteful number, since it uses less digits than its factorization.

195172965613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18076.

The product of its digits is 3061800, while the sum is 55.

The spelling of 195172965613 in words is "one hundred ninety-five billion, one hundred seventy-two million, nine hundred sixty-five thousand, six hundred thirteen".