11175068521 has 2 divisors, whose sum is σ = 11175068522. Its totient is φ = 11175068520.

The previous prime is 11175068479. The next prime is 11175068591. The reversal of 11175068521 is 12586057111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10704178521 + 470890000 = 103461^2 + 21700^2 .

It is an emirp because it is prime and its reverse (12586057111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11175068521 is a prime.

It is not a weakly prime, because it can be changed into another prime (11175068591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5587534260 + 5587534261.

It is an arithmetic number, because the mean of its divisors is an integer number (5587534261).

Almost surely, 2^11175068521 is an apocalyptic number.

It is an amenable number.

11175068521 is a deficient number, since it is larger than the sum of its proper divisors (1).

11175068521 is an equidigital number, since it uses as much as digits as its factorization.

11175068521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 37.

The spelling of 11175068521 in words is "eleven billion, one hundred seventy-five million, sixty-eight thousand, five hundred twenty-one".