3205605641995 has 4 divisors (see below), whose sum is σ = 3846726770400. Its totient is φ = 2564484513592.

The previous prime is 3205605641977. The next prime is 3205605642047. The reversal of 3205605641995 is 5991465065023.

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 3205605641995 - 2⁷ = 3205605641867 is a prime.

It is a super-2 number, since 2×3205605641995² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320560564195 + ... + 320560564204.

It is an arithmetic number, because the mean of its divisors is an integer number (961681692600).

Almost surely, 2^{3205605641995} is an apocalyptic number.

3205605641995 is a deficient number, since it is larger than the sum of its proper divisors (641121128405).

3205605641995 is an equidigital number, since it uses as much as digits as its factorization.

3205605641995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641121128404.

The product of its (nonzero) digits is 8748000, while the sum is 55.

The spelling of 3205605641995 in words is "three trillion, two hundred five billion, six hundred five million, six hundred forty-one thousand, nine hundred ninety-five".