12340839648 has 48 divisors (see below), whose sum is σ = 34300279440. Its totient is φ = 3871635456.

The previous prime is 12340839629. The next prime is 12340839661. The reversal of 12340839648 is 84693804321.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 12340839597 and 12340839606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3779263 + ... + 3782526.

It is an arithmetic number, because the mean of its divisors is an integer number (714589155).

Almost surely, 2^12340839648 is an apocalyptic number.

It is an amenable number.

12340839648 is an abundant number, since it is smaller than the sum of its proper divisors (21959439792).

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

12340839648 is a wasteful number, since it uses less digits than its factorization.

12340839648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7561819 (or 7561811 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 48.

The spelling of 12340839648 in words is "twelve billion, three hundred forty million, eight hundred thirty-nine thousand, six hundred forty-eight".