11509912028141 has 2 divisors, whose sum is σ = 11509912028142. Its totient is φ = 11509912028140.

The previous prime is 11509912028081. The next prime is 11509912028143. The reversal of 11509912028141 is 14182021990511.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8274396075625 + 3235515952516 = 2876525^2 + 1798754^2 .

It is a cyclic number.

It is not a de Polignac number, because 11509912028141 - 2¹⁸ = 11509911765997 is a prime.

It is a Sophie Germain prime.

Together with 11509912028143, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11509912028092 and 11509912028101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11509912028143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5754956014070 + 5754956014071.

It is an arithmetic number, because the mean of its divisors is an integer number (5754956014071).

Almost surely, 2^{11509912028141} is an apocalyptic number.

It is an amenable number.

11509912028141 is a deficient number, since it is larger than the sum of its proper divisors (1).

11509912028141 is an equidigital number, since it uses as much as digits as its factorization.

11509912028141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 44.

The spelling of 11509912028141 in words is "eleven trillion, five hundred nine billion, nine hundred twelve million, twenty-eight thousand, one hundred forty-one".