6813376517 has 8 divisors (see below), whose sum is σ = 6960964440. Its totient is φ = 6666946560.

The previous prime is 6813376499. The next prime is 6813376523. The reversal of 6813376517 is 7156733186.

It can be written as a sum of positive squares in 4 ways, for example, as 259016836 + 6554359681 = 16094^2 + 80959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6813376517 - 2¹⁶ = 6813310981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6813396517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277592 + ... + 301137.

It is an arithmetic number, because the mean of its divisors is an integer number (870120555).

Almost surely, 2^6813376517 is an apocalyptic number.

It is an amenable number.

6813376517 is a deficient number, since it is larger than the sum of its proper divisors (147587923).

6813376517 is a wasteful number, since it uses less digits than its factorization.

6813376517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578983.

The product of its digits is 635040, while the sum is 47.

The square root of 6813376517 is about 82543.1797121967. The cubic root of 6813376517 is about 1895.7779302666. Note that the first 3 decimals are identical.

The spelling of 6813376517 in words is "six billion, eight hundred thirteen million, three hundred seventy-six thousand, five hundred seventeen".