12440707788 has 12 divisors (see below), whose sum is σ = 29028318200. Its totient is φ = 4146902592.

The previous prime is 12440707787. The next prime is 12440708051. The reversal of 12440707788 is 88770704421.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12440707787) 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, 518362813 + ... + 518362836.

Almost surely, 2^12440707788 is an apocalyptic number.

It is an amenable number.

12440707788 is an abundant number, since it is smaller than the sum of its proper divisors (16587610412).

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

12440707788 is a wasteful number, since it uses less digits than its factorization.

12440707788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036725656 (or 1036725654 counting only the distinct ones).

The product of its (nonzero) digits is 702464, while the sum is 48.

The spelling of 12440707788 in words is "twelve billion, four hundred forty million, seven hundred seven thousand, seven hundred eighty-eight".