11751543248761 has 2 divisors, whose sum is σ = 11751543248762. Its totient is φ = 11751543248760.

The previous prime is 11751543248677. The next prime is 11751543248771. The reversal of 11751543248761 is 16784234515711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11627247515625 + 124295733136 = 3409875^2 + 352556^2 .

It is a cyclic number.

It is not a de Polignac number, because 11751543248761 - 2²⁹ = 11751006377849 is a prime.

It is not a weakly prime, because it can be changed into another prime (11751543248771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5875771624380 + 5875771624381.

It is an arithmetic number, because the mean of its divisors is an integer number (5875771624381).

Almost surely, 2^{11751543248761} is an apocalyptic number.

It is an amenable number.

11751543248761 is a deficient number, since it is larger than the sum of its proper divisors (1).

11751543248761 is an equidigital number, since it uses as much as digits as its factorization.

11751543248761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5644800, while the sum is 55.

The spelling of 11751543248761 in words is "eleven trillion, seven hundred fifty-one billion, five hundred forty-three million, two hundred forty-eight thousand, seven hundred sixty-one".