7421286815713 has 2 divisors, whose sum is σ = 7421286815714. Its totient is φ = 7421286815712.

The previous prime is 7421286815693. The next prime is 7421286815731. The reversal of 7421286815713 is 3175186821247.

Together with next prime (7421286815731) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4532078961424 + 2889207854289 = 2128868^2 + 1699767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7421286815713 is a prime.

It is not a weakly prime, because it can be changed into another prime (7421286815773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3710643407856 + 3710643407857.

It is an arithmetic number, because the mean of its divisors is an integer number (3710643407857).

Almost surely, 2^{7421286815713} is an apocalyptic number.

It is an amenable number.

7421286815713 is a deficient number, since it is larger than the sum of its proper divisors (1).

7421286815713 is an equidigital number, since it uses as much as digits as its factorization.

7421286815713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4515840, while the sum is 55.

The spelling of 7421286815713 in words is "seven trillion, four hundred twenty-one billion, two hundred eighty-six million, eight hundred fifteen thousand, seven hundred thirteen".