11580140881 has 4 divisors (see below), whose sum is σ = 12189622000. Its totient is φ = 10970659764.

The previous prime is 11580140879. The next prime is 11580140893. The reversal of 11580140881 is 18804108511.

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 11580140881 - 2¹ = 11580140879 is a prime.

It is a super-2 number, since 2×11580140881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11580140881.

It is not an unprimeable number, because it can be changed into a prime (11580140851) 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, 304740531 + ... + 304740568.

It is an arithmetic number, because the mean of its divisors is an integer number (3047405500).

Almost surely, 2^11580140881 is an apocalyptic number.

It is an amenable number.

11580140881 is a deficient number, since it is larger than the sum of its proper divisors (609481119).

11580140881 is an equidigital number, since it uses as much as digits as its factorization.

11580140881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609481118.

The product of its (nonzero) digits is 10240, while the sum is 37.

The spelling of 11580140881 in words is "eleven billion, five hundred eighty million, one hundred forty thousand, eight hundred eighty-one".