11550552613 has 4 divisors (see below), whose sum is σ = 11594471328. Its totient is φ = 11506633900.

The previous prime is 11550552583. The next prime is 11550552623. The reversal of 11550552613 is 31625505511.

11550552613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 11550552613 - 2¹⁷ = 11550421541 is a prime.

It is a super-2 number, since 2×11550552613² (a number of 21 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 (11550552623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21958963 + ... + 21959488.

It is an arithmetic number, because the mean of its divisors is an integer number (2898617832).

Almost surely, 2^11550552613 is an apocalyptic number.

It is an amenable number.

11550552613 is a deficient number, since it is larger than the sum of its proper divisors (43918715).

11550552613 is an equidigital number, since it uses as much as digits as its factorization.

11550552613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43918714.

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 11550552613 in words is "eleven billion, five hundred fifty million, five hundred fifty-two thousand, six hundred thirteen".