11553223046421 has 16 divisors (see below), whose sum is σ = 17623501530624. Its totient is φ = 6594870407664.

The previous prime is 11553223046329. The next prime is 11553223046471. The reversal of 11553223046421 is 12464032235511.

It is not a de Polignac number, because 11553223046421 - 2¹⁵ = 11553223013653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11553223046421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11553223046471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290451855 + ... + 290491628.

It is an arithmetic number, because the mean of its divisors is an integer number (1101468845664).

Almost surely, 2^{11553223046421} is an apocalyptic number.

It is an amenable number.

11553223046421 is a deficient number, since it is larger than the sum of its proper divisors (6070278484203).

11553223046421 is an equidigital number, since it uses as much as digits as its factorization.

11553223046421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580944440.

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 11553223046421 in words is "eleven trillion, five hundred fifty-three billion, two hundred twenty-three million, forty-six thousand, four hundred twenty-one".