6378140278840 has 64 divisors (see below), whose sum is σ = 15700552133760. Its totient is φ = 2312639752320.

The previous prime is 6378140278831. The next prime is 6378140278841. The reversal of 6378140278840 is 488720418736.

It is a super-2 number, since 2×6378140278840² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6378140278841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20734602 + ... + 21039961.

It is an arithmetic number, because the mean of its divisors is an integer number (245321127090).

Almost surely, 2^{6378140278840} is an apocalyptic number.

It is an amenable number.

6378140278840 is an abundant number, since it is smaller than the sum of its proper divisors (9322411854920).

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

6378140278840 is a wasteful number, since it uses less digits than its factorization.

6378140278840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41774932 (or 41774928 counting only the distinct ones).

The product of its (nonzero) digits is 14450688, while the sum is 58.

The spelling of 6378140278840 in words is "six trillion, three hundred seventy-eight billion, one hundred forty million, two hundred seventy-eight thousand, eight hundred forty".