3212540413205 has 4 divisors (see below), whose sum is σ = 3855048495852. Its totient is φ = 2570032330560.

The previous prime is 3212540413141. The next prime is 3212540413207. The reversal of 3212540413205 is 5023140452123.

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 699608453476 + 2512931959729 = 836426^2 + 1585223^2 .

It is not a de Polignac number, because 3212540413205 - 2⁶ = 3212540413141 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 (3212540413207) 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, 321254041316 + ... + 321254041325.

It is an arithmetic number, because the mean of its divisors is an integer number (963762123963).

Almost surely, 2^{3212540413205} is an apocalyptic number.

It is an amenable number.

3212540413205 is a deficient number, since it is larger than the sum of its proper divisors (642508082647).

3212540413205 is an equidigital number, since it uses as much as digits as its factorization.

3212540413205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642508082646.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 3212540413205 its reverse (5023140452123), we get a palindrome (8235680865328).

The spelling of 3212540413205 in words is "three trillion, two hundred twelve billion, five hundred forty million, four hundred thirteen thousand, two hundred five".