2013208649641 has 6 divisors (see below), whose sum is σ = 2341895776170. Its totient is φ = 1725607413936.

The previous prime is 2013208649623. The next prime is 2013208649773. The reversal of 2013208649641 is 1469468023102.

It can be written as a sum of positive squares in only one way, i.e., 1936647973225 + 76560676416 = 1391635^2 + 276696^2 .

It is not a de Polignac number, because 2013208649641 - 2¹³ = 2013208641449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2013208649591 and 2013208649600.

It is not an unprimeable number, because it can be changed into a prime (2013208649611) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 20542945356 + ... + 20542945453.

It is an arithmetic number, because the mean of its divisors is an integer number (390315962695).

Almost surely, 2^{2013208649641} is an apocalyptic number.

It is an amenable number.

2013208649641 is a deficient number, since it is larger than the sum of its proper divisors (328687126529).

2013208649641 is an equidigital number, since it uses as much as digits as its factorization.

2013208649641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41085890823 (or 41085890816 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 2013208649641 in words is "two trillion, thirteen billion, two hundred eight million, six hundred forty-nine thousand, six hundred forty-one".