6978405038808 has 32 divisors (see below), whose sum is σ = 19938300111360. Its totient is φ = 1993830011040.

The previous prime is 6978405038807. The next prime is 6978405038837. The reversal of 6978405038808 is 8088305048796.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6978405038807) 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, 20769062448 + ... + 20769062783.

It is an arithmetic number, because the mean of its divisors is an integer number (623071878480).

Almost surely, 2^{6978405038808} is an apocalyptic number.

It is an amenable number.

6978405038808 is an abundant number, since it is smaller than the sum of its proper divisors (12959895072552).

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

6978405038808 is a wasteful number, since it uses less digits than its factorization.

6978405038808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41538125247 (or 41538125243 counting only the distinct ones).

The product of its (nonzero) digits is 92897280, while the sum is 66.

The spelling of 6978405038808 in words is "six trillion, nine hundred seventy-eight billion, four hundred five million, thirty-eight thousand, eight hundred eight".