11279491131543 has 8 divisors (see below), whose sum is σ = 15039407230848. Its totient is φ = 7519617893304.

The previous prime is 11279491131523. The next prime is 11279491131577. The reversal of 11279491131543 is 34513119497211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11279491131543 - 2¹² = 11279491127447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11279491131523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10096105 + ... + 11157522.

It is an arithmetic number, because the mean of its divisors is an integer number (1879925903856).

Almost surely, 2^{11279491131543} is an apocalyptic number.

11279491131543 is a deficient number, since it is larger than the sum of its proper divisors (3759916099305).

11279491131543 is a wasteful number, since it uses less digits than its factorization.

11279491131543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21430533.

The product of its digits is 816480, while the sum is 51.

The spelling of 11279491131543 in words is "eleven trillion, two hundred seventy-nine billion, four hundred ninety-one million, one hundred thirty-one thousand, five hundred forty-three".