12440408551 has 2 divisors, whose sum is σ = 12440408552. Its totient is φ = 12440408550.

The previous prime is 12440408501. The next prime is 12440408611. The reversal of 12440408551 is 15580404421.

12440408551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12440408551 - 2²¹ = 12438311399 is a prime.

It is a super-3 number, since 3×12440408551³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12440408501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6220204275 + 6220204276.

It is an arithmetic number, because the mean of its divisors is an integer number (6220204276).

Almost surely, 2^12440408551 is an apocalyptic number.

12440408551 is a deficient number, since it is larger than the sum of its proper divisors (1).

12440408551 is an equidigital number, since it uses as much as digits as its factorization.

12440408551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25600, while the sum is 34.

The spelling of 12440408551 in words is "twelve billion, four hundred forty million, four hundred eight thousand, five hundred fifty-one".