3640440405311 has 16 divisors (see below), whose sum is σ = 3675975101568. Its totient is φ = 3605040019200.

The previous prime is 3640440405299. The next prime is 3640440405313. The reversal of 3640440405311 is 1135040440463.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3640440405311 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 (3640440405313) 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, 360684581 + ... + 360694673.

It is an arithmetic number, because the mean of its divisors is an integer number (229748443848).

Almost surely, 2^{3640440405311} is an apocalyptic number.

3640440405311 is a deficient number, since it is larger than the sum of its proper divisors (35534696257).

3640440405311 is a wasteful number, since it uses less digits than its factorization.

3640440405311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16402.

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 3640440405311 its reverse (1135040440463), we get a palindrome (4775480845774).

The spelling of 3640440405311 in words is "three trillion, six hundred forty billion, four hundred forty million, four hundred five thousand, three hundred eleven".