6517678753 has 4 divisors (see below), whose sum is σ = 6517925568. Its totient is φ = 6517431940.

The previous prime is 6517678721. The next prime is 6517678771. The reversal of 6517678753 is 3578767156.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6517678753 - 2⁵ = 6517678721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6517678694 and 6517678703.

It is not an unprimeable number, because it can be changed into a prime (6517673753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78301 + ... + 138442.

It is an arithmetic number, because the mean of its divisors is an integer number (1629481392).

Almost surely, 2^6517678753 is an apocalyptic number.

It is an amenable number.

6517678753 is a deficient number, since it is larger than the sum of its proper divisors (246815).

6517678753 is a wasteful number, since it uses less digits than its factorization.

6517678753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246814.

The product of its digits is 7408800, while the sum is 55.

The square root of 6517678753 is about 80732.1420067621. The cubic root of 6517678753 is about 1867.9459991733.

The spelling of 6517678753 in words is "six billion, five hundred seventeen million, six hundred seventy-eight thousand, seven hundred fifty-three".