11403343323553 has 16 divisors (see below), whose sum is σ = 11560095319360. Its totient is φ = 11247436569600.

The previous prime is 11403343323539. The next prime is 11403343323563. The reversal of 11403343323553 is 35532334330411.

It is a cyclic number.

It is not a de Polignac number, because 11403343323553 - 2³⁷ = 11265904370081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11403343323563) 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, 48446518 + ... + 48681328.

It is an arithmetic number, because the mean of its divisors is an integer number (722505957460).

Almost surely, 2^{11403343323553} is an apocalyptic number.

It is an amenable number.

11403343323553 is a deficient number, since it is larger than the sum of its proper divisors (156751995807).

11403343323553 is a wasteful number, since it uses less digits than its factorization.

11403343323553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236608.

The product of its (nonzero) digits is 583200, while the sum is 40.

Adding to 11403343323553 its reverse (35532334330411), we get a palindrome (46935677653964).

The spelling of 11403343323553 in words is "eleven trillion, four hundred three billion, three hundred forty-three million, three hundred twenty-three thousand, five hundred fifty-three".