6378660873 has 16 divisors (see below), whose sum is σ = 10176781440. Its totient is φ = 3925329552.

The previous prime is 6378660859. The next prime is 6378660877. The reversal of 6378660873 is 3780668736.

It is not a de Polignac number, because 6378660873 - 2⁹ = 6378660361 is a prime.

It is a super-2 number, since 2×6378660873² = 81374629065482244258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6378660877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9086061 + ... + 9086762.

It is an arithmetic number, because the mean of its divisors is an integer number (636048840).

Almost surely, 2^6378660873 is an apocalyptic number.

It is an amenable number.

6378660873 is a deficient number, since it is larger than the sum of its proper divisors (3798120567).

6378660873 is a wasteful number, since it uses less digits than its factorization.

6378660873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18172845 (or 18172839 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The square root of 6378660873 is about 79866.5190990568. The cubic root of 6378660873 is about 1854.5697471830.

The spelling of 6378660873 in words is "six billion, three hundred seventy-eight million, six hundred sixty thousand, eight hundred seventy-three".