11585449711 has 4 divisors (see below), whose sum is σ = 12638672424. Its totient is φ = 10532227000.

The previous prime is 11585449699. The next prime is 11585449769. The reversal of 11585449711 is 11794458511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11794458511 = 11 ⋅1072223501.

It is a cyclic number.

It is not a de Polignac number, because 11585449711 - 2⁹ = 11585449199 is a prime.

It is a super-2 number, since 2×11585449711² (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 (11585449111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526611340 + ... + 526611361.

It is an arithmetic number, because the mean of its divisors is an integer number (3159668106).

Almost surely, 2^11585449711 is an apocalyptic number.

11585449711 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11585449711 is a deficient number, since it is larger than the sum of its proper divisors (1053222713).

11585449711 is a wasteful number, since it uses less digits than its factorization.

11585449711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053222712.

The product of its digits is 201600, while the sum is 46.

The spelling of 11585449711 in words is "eleven billion, five hundred eighty-five million, four hundred forty-nine thousand, seven hundred eleven".