11742245578171 has 2 divisors, whose sum is σ = 11742245578172. Its totient is φ = 11742245578170.

The previous prime is 11742245578117. The next prime is 11742245578223. The reversal of 11742245578171 is 17187554224711.

Together with previous prime (11742245578117) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11742245578171 - 2⁷ = 11742245578043 is a prime.

It is not a weakly prime, because it can be changed into another prime (11742245578571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5871122789085 + 5871122789086.

It is an arithmetic number, because the mean of its divisors is an integer number (5871122789086).

Almost surely, 2^{11742245578171} is an apocalyptic number.

11742245578171 is a deficient number, since it is larger than the sum of its proper divisors (1).

11742245578171 is an equidigital number, since it uses as much as digits as its factorization.

11742245578171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4390400, while the sum is 55.

The spelling of 11742245578171 in words is "eleven trillion, seven hundred forty-two billion, two hundred forty-five million, five hundred seventy-eight thousand, one hundred seventy-one".