11581815105103 has 4 divisors (see below), whose sum is σ = 11584776452688. Its totient is φ = 11578853757520.

The previous prime is 11581815105097. The next prime is 11581815105149. The reversal of 11581815105103 is 30150151818511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11581815105103 - 2³³ = 11573225170511 is a prime.

It is a super-2 number, since 2×11581815105103² (a number of 27 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 (11581815105173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1480667926 + ... + 1480675747.

It is an arithmetic number, because the mean of its divisors is an integer number (2896194113172).

Almost surely, 2^{11581815105103} is an apocalyptic number.

11581815105103 is a deficient number, since it is larger than the sum of its proper divisors (2961347585).

11581815105103 is an equidigital number, since it uses as much as digits as its factorization.

11581815105103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2961347584.

The product of its (nonzero) digits is 24000, while the sum is 40.

The spelling of 11581815105103 in words is "eleven trillion, five hundred eighty-one billion, eight hundred fifteen million, one hundred five thousand, one hundred three".