11137421453 has 2 divisors, whose sum is σ = 11137421454. Its totient is φ = 11137421452.

The previous prime is 11137421417. The next prime is 11137421479. The reversal of 11137421453 is 35412473111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11125608484 + 11812969 = 105478^2 + 3437^2 .

It is a cyclic number.

It is not a de Polignac number, because 11137421453 - 2¹⁶ = 11137355917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11137421413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5568710726 + 5568710727.

It is an arithmetic number, because the mean of its divisors is an integer number (5568710727).

Almost surely, 2^11137421453 is an apocalyptic number.

It is an amenable number.

11137421453 is a deficient number, since it is larger than the sum of its proper divisors (1).

11137421453 is an equidigital number, since it uses as much as digits as its factorization.

11137421453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

Adding to 11137421453 its reverse (35412473111), we get a palindrome (46549894564).

The spelling of 11137421453 in words is "eleven billion, one hundred thirty-seven million, four hundred twenty-one thousand, four hundred fifty-three".