2195852172691 has 4 divisors (see below), whose sum is σ = 2195855758072. Its totient is φ = 2195848587312.

The previous prime is 2195852172649. The next prime is 2195852172697. The reversal of 2195852172691 is 1962712585912.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2195852172691 - 2¹⁷ = 2195852041619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2195852172697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 617010 + ... + 2184583.

It is an arithmetic number, because the mean of its divisors is an integer number (548963939518).

Almost surely, 2^{2195852172691} is an apocalyptic number.

2195852172691 is a deficient number, since it is larger than the sum of its proper divisors (3585381).

2195852172691 is an equidigital number, since it uses as much as digits as its factorization.

2195852172691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3585380.

The product of its digits is 5443200, while the sum is 58.

The spelling of 2195852172691 in words is "two trillion, one hundred ninety-five billion, eight hundred fifty-two million, one hundred seventy-two thousand, six hundred ninety-one".