11555231253187 has 2 divisors, whose sum is σ = 11555231253188. Its totient is φ = 11555231253186.

The previous prime is 11555231253149. The next prime is 11555231253191. The reversal of 11555231253187 is 78135213255511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11555231253187 - 2²³ = 11555222864579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11555231253187.

It is not a weakly prime, because it can be changed into another prime (11555231253127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5777615626593 + 5777615626594.

It is an arithmetic number, because the mean of its divisors is an integer number (5777615626594).

Almost surely, 2^{11555231253187} is an apocalyptic number.

11555231253187 is a deficient number, since it is larger than the sum of its proper divisors (1).

11555231253187 is an equidigital number, since it uses as much as digits as its factorization.

11555231253187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260000, while the sum is 49.

The spelling of 11555231253187 in words is "eleven trillion, five hundred fifty-five billion, two hundred thirty-one million, two hundred fifty-three thousand, one hundred eighty-seven".