12440016855 has 216 divisors, whose sum is σ = 26655726240. Its totient is φ = 5555329920.

The previous prime is 12440016833. The next prime is 12440016857. The reversal of 12440016855 is 55861004421.

It is a happy number.

12440016855 is a `hidden beast` number, since 1 + 2 + 440 + 0 + 168 + 55 = 666.

It is not a de Polignac number, because 12440016855 - 2⁷ = 12440016727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440016857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 114128541 + ... + 114128649.

It is an arithmetic number, because the mean of its divisors is an integer number (123406140).

Almost surely, 2^12440016855 is an apocalyptic number.

12440016855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12440016855 is an abundant number, since it is smaller than the sum of its proper divisors (14215709385).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12440016855 is an frugal number, since it uses more digits than its factorization.

12440016855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 12440016855 in words is "twelve billion, four hundred forty million, sixteen thousand, eight hundred fifty-five".