12739143840 has 96 divisors (see below), whose sum is σ = 40145305536. Its totient is φ = 3395665920.

The previous prime is 12739143839. The next prime is 12739143847. The reversal of 12739143840 is 4834193721.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 12739143792 and 12739143801.

It is not an unprimeable number, because it can be changed into a prime (12739143847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1614144 + ... + 1622016.

It is an arithmetic number, because the mean of its divisors is an integer number (418180266).

Almost surely, 2^12739143840 is an apocalyptic number.

12739143840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12739143840 is an abundant number, since it is smaller than the sum of its proper divisors (27406161696).

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

12739143840 is a wasteful number, since it uses less digits than its factorization.

12739143840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11262 (or 11254 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 12739143840 in words is "twelve billion, seven hundred thirty-nine million, one hundred forty-three thousand, eight hundred forty".