6378987912 has 32 divisors (see below), whose sum is σ = 17397240480. Its totient is φ = 1933026560.

The previous prime is 6378987907. The next prime is 6378987913. The reversal of 6378987912 is 2197898736.

It is not an unprimeable number, because it can be changed into a prime (6378987913) 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, 12081153 + ... + 12081680.

It is an arithmetic number, because the mean of its divisors is an integer number (543663765).

Almost surely, 2^6378987912 is an apocalyptic number.

It is an amenable number.

6378987912 is an abundant number, since it is smaller than the sum of its proper divisors (11018252568).

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

6378987912 is a wasteful number, since it uses less digits than its factorization.

6378987912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24162853 (or 24162849 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 60.

The square root of 6378987912 is about 79868.5664826908. The cubic root of 6378987912 is about 1854.6014417284.

The spelling of 6378987912 in words is "six billion, three hundred seventy-eight million, nine hundred eighty-seven thousand, nine hundred twelve".