11050423561 has 2 divisors, whose sum is σ = 11050423562. Its totient is φ = 11050423560.

The previous prime is 11050423513. The next prime is 11050423583. The reversal of 11050423561 is 16532405011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8236651536 + 2813772025 = 90756^2 + 53045^2 .

It is an emirp because it is prime and its reverse (16532405011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11050423561 - 2³³ = 2460488969 is a prime.

It is a super-2 number, since 2×11050423561² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11050423061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5525211780 + 5525211781.

It is an arithmetic number, because the mean of its divisors is an integer number (5525211781).

Almost surely, 2^11050423561 is an apocalyptic number.

It is an amenable number.

11050423561 is a deficient number, since it is larger than the sum of its proper divisors (1).

11050423561 is an equidigital number, since it uses as much as digits as its factorization.

11050423561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 11050423561 its reverse (16532405011), we get a palindrome (27582828572).

The spelling of 11050423561 in words is "eleven billion, fifty million, four hundred twenty-three thousand, five hundred sixty-one".