11473013621 has 2 divisors, whose sum is σ = 11473013622. Its totient is φ = 11473013620.

The previous prime is 11473013597. The next prime is 11473013633. The reversal of 11473013621 is 12631037411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10807889521 + 665124100 = 103961^2 + 25790^2 .

It is an emirp because it is prime and its reverse (12631037411) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11473013621 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11473013221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5736506810 + 5736506811.

It is an arithmetic number, because the mean of its divisors is an integer number (5736506811).

Almost surely, 2^11473013621 is an apocalyptic number.

It is an amenable number.

11473013621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11473013621 is an equidigital number, since it uses as much as digits as its factorization.

11473013621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The spelling of 11473013621 in words is "eleven billion, four hundred seventy-three million, thirteen thousand, six hundred twenty-one".