11404543421 has 4 divisors (see below), whose sum is σ = 11407045152. Its totient is φ = 11402041692.

The previous prime is 11404543417. The next prime is 11404543481. The reversal of 11404543421 is 12434540411.

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 11404543421 - 2² = 11404543417 is a prime.

It is a super-2 number, since 2×11404543421² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11404543481) 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, 1244015 + ... + 1253148.

It is an arithmetic number, because the mean of its divisors is an integer number (2851761288).

Almost surely, 2^11404543421 is an apocalyptic number.

It is an amenable number.

11404543421 is a deficient number, since it is larger than the sum of its proper divisors (2501731).

11404543421 is an equidigital number, since it uses as much as digits as its factorization.

11404543421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2501730.

The product of its (nonzero) digits is 7680, while the sum is 29.

The spelling of 11404543421 in words is "eleven billion, four hundred four million, five hundred forty-three thousand, four hundred twenty-one".