6378426426 has 32 divisors (see below), whose sum is σ = 13457505600. Its totient is φ = 2009854080.

The previous prime is 6378426391. The next prime is 6378426427. The reversal of 6378426426 is 6246248736.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (6378426427) 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, 8131 + ... + 113238.

It is an arithmetic number, because the mean of its divisors is an integer number (420547050).

Almost surely, 2^6378426426 is an apocalyptic number.

6378426426 is an abundant number, since it is smaller than the sum of its proper divisors (7079079174).

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

6378426426 is a wasteful number, since it uses less digits than its factorization.

6378426426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121854.

The product of its digits is 2322432, while the sum is 48.

The square root of 6378426426 is about 79865.0513428746. The cubic root of 6378426426 is about 1854.5470254002.

The spelling of 6378426426 in words is "six billion, three hundred seventy-eight million, four hundred twenty-six thousand, four hundred twenty-six".