12440553311 has 4 divisors (see below), whose sum is σ = 12441178872. Its totient is φ = 12439927752.

The previous prime is 12440553287. The next prime is 12440553343. The reversal of 12440553311 is 11335504421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11335504421 = 2833 ⋅4001237.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12440553311 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 (12440559311) 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, 281936 + ... + 323061.

It is an arithmetic number, because the mean of its divisors is an integer number (3110294718).

Almost surely, 2^12440553311 is an apocalyptic number.

12440553311 is a deficient number, since it is larger than the sum of its proper divisors (625561).

12440553311 is an equidigital number, since it uses as much as digits as its factorization.

12440553311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625560.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 12440553311 in words is "twelve billion, four hundred forty million, five hundred fifty-three thousand, three hundred eleven".