12040455311 has 4 divisors (see below), whose sum is σ = 12563953392. Its totient is φ = 11516957232.

The previous prime is 12040455299. The next prime is 12040455319. The reversal of 12040455311 is 11355404021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11355404021 = 13 ⋅873492617.

It is a cyclic number.

It is not a de Polignac number, because 12040455311 - 2¹⁸ = 12040193167 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 (12040455319) 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, 261749006 + ... + 261749051.

It is an arithmetic number, because the mean of its divisors is an integer number (3140988348).

Almost surely, 2^12040455311 is an apocalyptic number.

12040455311 is a deficient number, since it is larger than the sum of its proper divisors (523498081).

12040455311 is an equidigital number, since it uses as much as digits as its factorization.

12040455311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523498080.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 12040455311 its reverse (11355404021), we get a palindrome (23395859332).

The spelling of 12040455311 in words is "twelve billion, forty million, four hundred fifty-five thousand, three hundred eleven".