11143412461 has 4 divisors (see below), whose sum is σ = 11402561632. Its totient is φ = 10884263292.

The previous prime is 11143412417. The next prime is 11143412549. The reversal of 11143412461 is 16421434111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11143412461 - 2¹¹ = 11143410413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11143412261) 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 in 3 ways as a sum of consecutive naturals, for example, 129574521 + ... + 129574606.

It is an arithmetic number, because the mean of its divisors is an integer number (2850640408).

Almost surely, 2^11143412461 is an apocalyptic number.

It is an amenable number.

11143412461 is a deficient number, since it is larger than the sum of its proper divisors (259149171).

11143412461 is an equidigital number, since it uses as much as digits as its factorization.

11143412461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259149170.

The product of its digits is 2304, while the sum is 28.

Adding to 11143412461 its reverse (16421434111), we get a palindrome (27564846572).

The spelling of 11143412461 in words is "eleven billion, one hundred forty-three million, four hundred twelve thousand, four hundred sixty-one".