7266621013 has 2 divisors, whose sum is σ = 7266621014. Its totient is φ = 7266621012.

The previous prime is 7266621007. The next prime is 7266621091. The reversal of 7266621013 is 3101266627.

It is a happy number.

7266621013 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4899020049 + 2367600964 = 69993^2 + 48658^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7266621013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7266621013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7266621413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3633310506 + 3633310507.

It is an arithmetic number, because the mean of its divisors is an integer number (3633310507).

Almost surely, 2^7266621013 is an apocalyptic number.

It is an amenable number.

7266621013 is a deficient number, since it is larger than the sum of its proper divisors (1).

7266621013 is an equidigital number, since it uses as much as digits as its factorization.

7266621013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 7266621013 is about 85244.4779032636. The cubic root of 7266621013 is about 1936.9162234741.

The spelling of 7266621013 in words is "seven billion, two hundred sixty-six million, six hundred twenty-one thousand, thirteen".