11156142541 has 2 divisors, whose sum is σ = 11156142542. Its totient is φ = 11156142540.

The previous prime is 11156142527. The next prime is 11156142587. The reversal of 11156142541 is 14524165111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11104733641 + 51408900 = 105379^2 + 7170^2 .

It is a cyclic number.

It is not a de Polignac number, because 11156142541 - 2²³ = 11147753933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11156142841) 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, 5578071270 + 5578071271.

It is an arithmetic number, because the mean of its divisors is an integer number (5578071271).

Almost surely, 2^11156142541 is an apocalyptic number.

It is an amenable number.

11156142541 is a deficient number, since it is larger than the sum of its proper divisors (1).

11156142541 is an equidigital number, since it uses as much as digits as its factorization.

11156142541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 31.

The spelling of 11156142541 in words is "eleven billion, one hundred fifty-six million, one hundred forty-two thousand, five hundred forty-one".