11405555013 has 4 divisors (see below), whose sum is σ = 15207406688. Its totient is φ = 7603703340.

The previous prime is 11405554997. The next prime is 11405555033. The reversal of 11405555013 is 31055550411.

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 not a de Polignac number, because 11405555013 - 2⁴ = 11405554997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11405555033) 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, 1900925833 + ... + 1900925838.

It is an arithmetic number, because the mean of its divisors is an integer number (3801851672).

Almost surely, 2^11405555013 is an apocalyptic number.

It is an amenable number.

11405555013 is a deficient number, since it is larger than the sum of its proper divisors (3801851675).

11405555013 is an equidigital number, since it uses as much as digits as its factorization.

11405555013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3801851674.

The product of its (nonzero) digits is 7500, while the sum is 30.

The spelling of 11405555013 in words is "eleven billion, four hundred five million, five hundred fifty-five thousand, thirteen".