6378515682 has 64 divisors (see below), whose sum is σ = 16274801664. Its totient is φ = 1618223040.

The previous prime is 6378515681. The next prime is 6378515743. The reversal of 6378515682 is 2865158736.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6378515681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140673 + ... + 180404.

It is an arithmetic number, because the mean of its divisors is an integer number (254293776).

Almost surely, 2^6378515682 is an apocalyptic number.

6378515682 is an abundant number, since it is smaller than the sum of its proper divisors (9896285982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6378515682 is a wasteful number, since it uses less digits than its factorization.

6378515682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321143.

The product of its digits is 2419200, while the sum is 51.

The square root of 6378515682 is about 79865.6101335237. The cubic root of 6378515682 is about 1854.5556758450. Note that the first 3 decimals are identical.

The spelling of 6378515682 in words is "six billion, three hundred seventy-eight million, five hundred fifteen thousand, six hundred eighty-two".