12720077520613 has 2 divisors, whose sum is σ = 12720077520614. Its totient is φ = 12720077520612.

The previous prime is 12720077520589. The next prime is 12720077520671. The reversal of 12720077520613 is 31602577002721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6428217664449 + 6291859856164 = 2535393^2 + 2508358^2 .

It is a cyclic number.

It is not a de Polignac number, because 12720077520613 - 2⁴¹ = 10521054265061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12720077520613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12720077520673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6360038760306 + 6360038760307.

It is an arithmetic number, because the mean of its divisors is an integer number (6360038760307).

Almost surely, 2^{12720077520613} is an apocalyptic number.

It is an amenable number.

12720077520613 is a deficient number, since it is larger than the sum of its proper divisors (1).

12720077520613 is an equidigital number, since it uses as much as digits as its factorization.

12720077520613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 246960, while the sum is 43.

The spelling of 12720077520613 in words is "twelve trillion, seven hundred twenty billion, seventy-seven million, five hundred twenty thousand, six hundred thirteen".