11555231253149 has 2 divisors, whose sum is σ = 11555231253150. Its totient is φ = 11555231253148.

The previous prime is 11555231253131. The next prime is 11555231253187. The reversal of 11555231253149 is 94135213255511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11057420572900 + 497810680249 = 3325270^2 + 705557^2 .

It is a cyclic number.

It is not a de Polignac number, because 11555231253149 - 2¹² = 11555231249053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11555231253949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5777615626574 + 5777615626575.

It is an arithmetic number, because the mean of its divisors is an integer number (5777615626575).

Almost surely, 2^{11555231253149} is an apocalyptic number.

It is an amenable number.

11555231253149 is a deficient number, since it is larger than the sum of its proper divisors (1).

11555231253149 is an equidigital number, since it uses as much as digits as its factorization.

11555231253149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 810000, while the sum is 47.

The spelling of 11555231253149 in words is "eleven trillion, five hundred fifty-five billion, two hundred thirty-one million, two hundred fifty-three thousand, one hundred forty-nine".