11413434521 has 2 divisors, whose sum is σ = 11413434522. Its totient is φ = 11413434520.

The previous prime is 11413434499. The next prime is 11413434533. The reversal of 11413434521 is 12543431411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9242899600 + 2170534921 = 96140^2 + 46589^2 .

It is a cyclic number.

It is not a de Polignac number, because 11413434521 - 2³⁰ = 10339692697 is a prime.

It is not a weakly prime, because it can be changed into another prime (11413437521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5706717260 + 5706717261.

It is an arithmetic number, because the mean of its divisors is an integer number (5706717261).

Almost surely, 2^11413434521 is an apocalyptic number.

It is an amenable number.

11413434521 is a deficient number, since it is larger than the sum of its proper divisors (1).

11413434521 is an equidigital number, since it uses as much as digits as its factorization.

11413434521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 29.

Adding to 11413434521 its reverse (12543431411), we get a palindrome (23956865932).

The spelling of 11413434521 in words is "eleven billion, four hundred thirteen million, four hundred thirty-four thousand, five hundred twenty-one".