6553350426509 has 2 divisors, whose sum is σ = 6553350426510. Its totient is φ = 6553350426508.

The previous prime is 6553350426487. The next prime is 6553350426641. The reversal of 6553350426509 is 9056240533556.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6473956093609 + 79394332900 = 2544397^2 + 281770^2 .

It is a cyclic number.

It is not a de Polignac number, because 6553350426509 - 2⁸ = 6553350426253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6553350126509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3276675213254 + 3276675213255.

It is an arithmetic number, because the mean of its divisors is an integer number (3276675213255).

Almost surely, 2^{6553350426509} is an apocalyptic number.

It is an amenable number.

6553350426509 is a deficient number, since it is larger than the sum of its proper divisors (1).

6553350426509 is an equidigital number, since it uses as much as digits as its factorization.

6553350426509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580000, while the sum is 53.

The spelling of 6553350426509 in words is "six trillion, five hundred fifty-three billion, three hundred fifty million, four hundred twenty-six thousand, five hundred nine".