11734245411821 has 2 divisors, whose sum is σ = 11734245411822. Its totient is φ = 11734245411820.

The previous prime is 11734245411817. The next prime is 11734245411841. The reversal of 11734245411821 is 12811454243711.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11327566266025 + 406679145796 = 3365645^2 + 637714^2 .

It is a cyclic number.

It is not a de Polignac number, because 11734245411821 - 2² = 11734245411817 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 (11734245411841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5867122705910 + 5867122705911.

It is an arithmetic number, because the mean of its divisors is an integer number (5867122705911).

Almost surely, 2^{11734245411821} is an apocalyptic number.

It is an amenable number.

11734245411821 is a deficient number, since it is larger than the sum of its proper divisors (1).

11734245411821 is an equidigital number, since it uses as much as digits as its factorization.

11734245411821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 215040, while the sum is 44.

The spelling of 11734245411821 in words is "eleven trillion, seven hundred thirty-four billion, two hundred forty-five million, four hundred eleven thousand, eight hundred twenty-one".