11554403405421 has 8 divisors (see below), whose sum is σ = 15461488071904. Its totient is φ = 7675127171280.

The previous prime is 11554403405411. The next prime is 11554403405429. The reversal of 11554403405421 is 12450430445511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11554403405421 - 2¹¹ = 11554403403373 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11554403405421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11554403405429) 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 7 ways as a sum of consecutive naturals, for example, 6952107115 + ... + 6952108776.

It is an arithmetic number, because the mean of its divisors is an integer number (1932686008988).

Almost surely, 2^{11554403405421} is an apocalyptic number.

It is an amenable number.

11554403405421 is a deficient number, since it is larger than the sum of its proper divisors (3907084666483).

11554403405421 is a wasteful number, since it uses less digits than its factorization.

11554403405421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13904216171.

The product of its (nonzero) digits is 192000, while the sum is 39.

The spelling of 11554403405421 in words is "eleven trillion, five hundred fifty-four billion, four hundred three million, four hundred five thousand, four hundred twenty-one".