6553350126509 has 2 divisors, whose sum is σ = 6553350126510. Its totient is φ = 6553350126508.

The previous prime is 6553350126481. The next prime is 6553350126517. The reversal of 6553350126509 is 9056210533556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5626279632484 + 927070494025 = 2371978^2 + 962845^2 .

It is a cyclic number.

It is not a de Polignac number, because 6553350126509 - 2¹² = 6553350122413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6553350126409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3276675063254 + 3276675063255.

It is an arithmetic number, because the mean of its divisors is an integer number (3276675063255).

Almost surely, 2^{6553350126509} is an apocalyptic number.

It is an amenable number.

6553350126509 is a deficient number, since it is larger than the sum of its proper divisors (1).

6553350126509 is an equidigital number, since it uses as much as digits as its factorization.

6553350126509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3645000, while the sum is 50.

The spelling of 6553350126509 in words is "six trillion, five hundred fifty-three billion, three hundred fifty million, one hundred twenty-six thousand, five hundred nine".