6404553013 has 2 divisors, whose sum is σ = 6404553014. Its totient is φ = 6404553012.

The previous prime is 6404553011. The next prime is 6404553017. The reversal of 6404553013 is 3103554046.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5656092849 + 748460164 = 75207^2 + 27358^2 .

It is a cyclic number.

It is not a de Polignac number, because 6404553013 - 2¹ = 6404553011 is a prime.

Together with 6404553011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6404553011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3202276506 + 3202276507.

It is an arithmetic number, because the mean of its divisors is an integer number (3202276507).

Almost surely, 2^6404553013 is an apocalyptic number.

It is an amenable number.

6404553013 is a deficient number, since it is larger than the sum of its proper divisors (1).

6404553013 is an equidigital number, since it uses as much as digits as its factorization.

6404553013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 6404553013 is about 80028.4512720320. The cubic root of 6404553013 is about 1857.0757043791.

The spelling of 6404553013 in words is "six billion, four hundred four million, five hundred fifty-three thousand, thirteen".