12911719240 has 32 divisors (see below), whose sum is σ = 33201564480. Its totient is φ = 4426875072.

The previous prime is 12911719217. The next prime is 12911719253. The reversal of 12911719240 is 4291711921.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12911719240.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23056362 + ... + 23056921.

It is an arithmetic number, because the mean of its divisors is an integer number (1037548890).

Almost surely, 2^12911719240 is an apocalyptic number.

12911719240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12911719240 is an abundant number, since it is smaller than the sum of its proper divisors (20289845240).

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

12911719240 is a wasteful number, since it uses less digits than its factorization.

12911719240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46113301 (or 46113297 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 37.

The spelling of 12911719240 in words is "twelve billion, nine hundred eleven million, seven hundred nineteen thousand, two hundred forty".