11137021573 has 2 divisors, whose sum is σ = 11137021574. Its totient is φ = 11137021572.

The previous prime is 11137021549. The next prime is 11137021631. The reversal of 11137021573 is 37512073111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8287917444 + 2849104129 = 91038^2 + 53377^2 .

It is an emirp because it is prime and its reverse (37512073111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11137021573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11137024573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5568510786 + 5568510787.

It is an arithmetic number, because the mean of its divisors is an integer number (5568510787).

Almost surely, 2^11137021573 is an apocalyptic number.

It is an amenable number.

11137021573 is a deficient number, since it is larger than the sum of its proper divisors (1).

11137021573 is an equidigital number, since it uses as much as digits as its factorization.

11137021573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4410, while the sum is 31.

Adding to 11137021573 its reverse (37512073111), we get a palindrome (48649094684).

The spelling of 11137021573 in words is "eleven billion, one hundred thirty-seven million, twenty-one thousand, five hundred seventy-three".