6510778055 has 8 divisors (see below), whose sum is σ = 7817107392. Its totient is φ = 5205839968.

The previous prime is 6510778039. The next prime is 6510778067. The reversal of 6510778055 is 5508770156.

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 6510778055 - 2⁴ = 6510778039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6510777997 and 6510778015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337487 + ... + 356256.

It is an arithmetic number, because the mean of its divisors is an integer number (977138424).

Almost surely, 2^6510778055 is an apocalyptic number.

6510778055 is a deficient number, since it is larger than the sum of its proper divisors (1306329337).

6510778055 is a wasteful number, since it uses less digits than its factorization.

6510778055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695625.

The product of its (nonzero) digits is 294000, while the sum is 44.

The square root of 6510778055 is about 80689.3924565057. The cubic root of 6510778055 is about 1867.2865270106.

The spelling of 6510778055 in words is "six billion, five hundred ten million, seven hundred seventy-eight thousand, fifty-five".