11781261611082 has 24 divisors (see below), whose sum is σ = 25635620768004. Its totient is φ = 3910232750784.

The previous prime is 11781261611059. The next prime is 11781261611087. The reversal of 11781261611082 is 28011616218711.

It is a happy number.

11781261611082 is a `hidden beast` number, since 1 + 1 + 7 + 8 + 1 + 26 + 1 + 611 + 0 + 8 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11591103694041 + 190157917041 = 3404571^2 + 436071^2 .

It is not an unprimeable number, because it can be changed into a prime (11781261611087) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1404533433 + ... + 1404541820.

Almost surely, 2^{11781261611082} is an apocalyptic number.

11781261611082 is an abundant number, since it is smaller than the sum of its proper divisors (13854359156922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11781261611082 is a wasteful number, since it uses less digits than its factorization.

11781261611082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2809075494 (or 2809075491 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 45.

Adding to 11781261611082 its reverse (28011616218711), we get a palindrome (39792877829793).

The spelling of 11781261611082 in words is "eleven trillion, seven hundred eighty-one billion, two hundred sixty-one million, six hundred eleven thousand, eighty-two".