6378975642 has 96 divisors (see below), whose sum is σ = 14226285312. Its totient is φ = 1905027072.

The previous prime is 6378975623. The next prime is 6378975649. The reversal of 6378975642 is 2465798736.

It is not an unprimeable number, because it can be changed into a prime (6378975649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6528658 + ... + 6529634.

It is an arithmetic number, because the mean of its divisors is an integer number (148190472).

Almost surely, 2^6378975642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6378975642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7113142656).

6378975642 is an abundant number, since it is smaller than the sum of its proper divisors (7847309670).

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

6378975642 is a wasteful number, since it uses less digits than its factorization.

6378975642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192 (or 1179 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 57.

The square root of 6378975642 is about 79868.4896689552. The cubic root of 6378975642 is about 1854.6002526174.

The spelling of 6378975642 in words is "six billion, three hundred seventy-eight million, nine hundred seventy-five thousand, six hundred forty-two".