11453340421 has 2 divisors, whose sum is σ = 11453340422. Its totient is φ = 11453340420.

The previous prime is 11453340413. The next prime is 11453340443. The reversal of 11453340421 is 12404335411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7575787521 + 3877552900 = 87039^2 + 62270^2 .

It is a cyclic number.

It is not a de Polignac number, because 11453340421 - 2³ = 11453340413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11453340421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11453340401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5726670210 + 5726670211.

It is an arithmetic number, because the mean of its divisors is an integer number (5726670211).

Almost surely, 2^11453340421 is an apocalyptic number.

It is an amenable number.

11453340421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11453340421 is an equidigital number, since it uses as much as digits as its factorization.

11453340421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 11453340421 its reverse (12404335411), we get a palindrome (23857675832).

The spelling of 11453340421 in words is "eleven billion, four hundred fifty-three million, three hundred forty thousand, four hundred twenty-one".