12713771612240 has 40 divisors (see below), whose sum is σ = 29562765782280. Its totient is φ = 5084950058496.

The previous prime is 12713771612221. The next prime is 12713771612249. The reversal of 12713771612240 is 4221617731721.

It can be written as a sum of positive squares in 4 ways, for example, as 124360611904 + 12589411000336 = 352648^2 + 3548156^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 12713771612191 and 12713771612200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12713771612249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7994639 + ... + 9452078.

It is an arithmetic number, because the mean of its divisors is an integer number (739069144557).

Almost surely, 2^{12713771612240} is an apocalyptic number.

12713771612240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12713771612240 is an abundant number, since it is smaller than the sum of its proper divisors (16848994170040).

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

12713771612240 is a wasteful number, since it uses less digits than its factorization.

12713771612240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17455839 (or 17455833 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 44.

The spelling of 12713771612240 in words is "twelve trillion, seven hundred thirteen billion, seven hundred seventy-one million, six hundred twelve thousand, two hundred forty".