6478913117 has 2 divisors, whose sum is σ = 6478913118. Its totient is φ = 6478913116.

The previous prime is 6478913099. The next prime is 6478913141. The reversal of 6478913117 is 7113198746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6473650681 + 5262436 = 80459^2 + 2294^2 .

It is a cyclic number.

It is not a de Polignac number, because 6478913117 - 2¹⁶ = 6478847581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6478913167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3239456558 + 3239456559.

It is an arithmetic number, because the mean of its divisors is an integer number (3239456559).

Almost surely, 2^6478913117 is an apocalyptic number.

It is an amenable number.

6478913117 is a deficient number, since it is larger than the sum of its proper divisors (1).

6478913117 is an equidigital number, since it uses as much as digits as its factorization.

6478913117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 47.

The square root of 6478913117 is about 80491.6959505762. The cubic root of 6478913117 is about 1864.2352632321.

The spelling of 6478913117 in words is "six billion, four hundred seventy-eight million, nine hundred thirteen thousand, one hundred seventeen".