11641613043261 has 16 divisors (see below), whose sum is σ = 15757500544128. Its totient is φ = 7643632785600.

The previous prime is 11641613043223. The next prime is 11641613043289. The reversal of 11641613043261 is 16234031614611.

It is a happy number.

11641613043261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11641613043261 - 2⁶ = 11641613043197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11641612043261) 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, 28840726 + ... + 29241591.

It is an arithmetic number, because the mean of its divisors is an integer number (984843784008).

Almost surely, 2^{11641613043261} is an apocalyptic number.

It is an amenable number.

11641613043261 is a deficient number, since it is larger than the sum of its proper divisors (4115887500867).

11641613043261 is an equidigital number, since it uses as much as digits as its factorization.

11641613043261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58083332.

The product of its (nonzero) digits is 62208, while the sum is 39.

Adding to 11641613043261 its reverse (16234031614611), we get a palindrome (27875644657872).

The spelling of 11641613043261 in words is "eleven trillion, six hundred forty-one billion, six hundred thirteen million, forty-three thousand, two hundred sixty-one".