6978417888 has 192 divisors, whose sum is σ = 20913984000. Its totient is φ = 2019686400.

The previous prime is 6978417857. The next prime is 6978417899. The reversal of 6978417888 is 8887148796.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3579538 + ... + 3581486.

It is an arithmetic number, because the mean of its divisors is an integer number (108927000).

Almost surely, 2^6978417888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6978417888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10456992000).

6978417888 is an abundant number, since it is smaller than the sum of its proper divisors (13935566112).

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

6978417888 is a wasteful number, since it uses less digits than its factorization.

6978417888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145 (or 2137 counting only the distinct ones).

The product of its digits is 43352064, while the sum is 66.

The square root of 6978417888 is about 83536.9252965418. The cubic root of 6978417888 is about 1910.9632019456.

The spelling of 6978417888 in words is "six billion, nine hundred seventy-eight million, four hundred seventeen thousand, eight hundred eighty-eight".