6426321078 has 16 divisors (see below), whose sum is σ = 12913557696. Its totient is φ = 2131954440.

The previous prime is 6426321059. The next prime is 6426321089. The reversal of 6426321078 is 8701236246.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2536776 + ... + 2539307.

It is an arithmetic number, because the mean of its divisors is an integer number (807097356).

Almost surely, 2^6426321078 is an apocalyptic number.

6426321078 is an abundant number, since it is smaller than the sum of its proper divisors (6487236618).

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

6426321078 is a wasteful number, since it uses less digits than its factorization.

6426321078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5076299.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 6426321078 is about 80164.3379440010. The cubic root of 6426321078 is about 1859.1772942694.

It can be divided in two parts, 642632 and 1078, that multiplied together give a palindrome (692757296).

The spelling of 6426321078 in words is "six billion, four hundred twenty-six million, three hundred twenty-one thousand, seventy-eight".