12440761920 has 112 divisors (see below), whose sum is σ = 43888273920. Its totient is φ = 3317534208.

The previous prime is 12440761919. The next prime is 12440761967. The reversal of 12440761920 is 2916704421.

It is a happy number.

12440761920 is a `hidden beast` number, since 12 + 4 + 4 + 0 + 7 + 619 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 711312 + ... + 728591.

Almost surely, 2^12440761920 is an apocalyptic number.

12440761920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12440761920 is an abundant number, since it is smaller than the sum of its proper divisors (31447512000).

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

12440761920 is a wasteful number, since it uses less digits than its factorization.

12440761920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439929 (or 1439913 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 12440761920 in words is "twelve billion, four hundred forty million, seven hundred sixty-one thousand, nine hundred twenty".