2195133354985 has 4 divisors (see below), whose sum is σ = 2634160025988. Its totient is φ = 1756106683984.

The previous prime is 2195133354961. The next prime is 2195133355013. The reversal of 2195133354985 is 5894533315912.

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

It can be written as a sum of positive squares in 2 ways, for example, as 608387520064 + 1586745834921 = 779992^2 + 1259661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2195133354985 is a prime.

It is a super-2 number, since 2×2195133354985² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219513335494 + ... + 219513335503.

It is an arithmetic number, because the mean of its divisors is an integer number (658540006497).

Almost surely, 2^{2195133354985} is an apocalyptic number.

It is an amenable number.

2195133354985 is a deficient number, since it is larger than the sum of its proper divisors (439026671003).

2195133354985 is an equidigital number, since it uses as much as digits as its factorization.

2195133354985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439026671002.

The product of its digits is 17496000, while the sum is 58.

The spelling of 2195133354985 in words is "two trillion, one hundred ninety-five billion, one hundred thirty-three million, three hundred fifty-four thousand, nine hundred eighty-five".