11527410722561 has 2 divisors, whose sum is σ = 11527410722562. Its totient is φ = 11527410722560.

The previous prime is 11527410722549. The next prime is 11527410722599. The reversal of 11527410722561 is 16522701472511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6215971444225 + 5311439278336 = 2493185^2 + 2304656^2 .

It is a cyclic number.

It is not a de Polignac number, because 11527410722561 - 2¹⁰ = 11527410721537 is a prime.

It is a super-2 number, since 2×11527410722561² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11527410722161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5763705361280 + 5763705361281.

It is an arithmetic number, because the mean of its divisors is an integer number (5763705361281).

Almost surely, 2^{11527410722561} is an apocalyptic number.

It is an amenable number.

11527410722561 is a deficient number, since it is larger than the sum of its proper divisors (1).

11527410722561 is an equidigital number, since it uses as much as digits as its factorization.

11527410722561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 235200, while the sum is 44.

The spelling of 11527410722561 in words is "eleven trillion, five hundred twenty-seven billion, four hundred ten million, seven hundred twenty-two thousand, five hundred sixty-one".