12340578729140 has 48 divisors (see below), whose sum is σ = 26065029336192. Its totient is φ = 4907730635136.

The previous prime is 12340578729133. The next prime is 12340578729169. The reversal of 12340578729140 is 4192787504321.

It is a happy number.

It is a congruent number.

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, 4524929 + ... + 6719831.

It is an arithmetic number, because the mean of its divisors is an integer number (543021444504).

Almost surely, 2^{12340578729140} is an apocalyptic number.

12340578729140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12340578729140 is an abundant number, since it is smaller than the sum of its proper divisors (13724450607052).

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

12340578729140 is a wasteful number, since it uses less digits than its factorization.

12340578729140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196536 (or 2196534 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 53.

The spelling of 12340578729140 in words is "twelve trillion, three hundred forty billion, five hundred seventy-eight million, seven hundred twenty-nine thousand, one hundred forty".