6899133888 has 84 divisors (see below), whose sum is σ = 19908088200. Its totient is φ = 2284248576.

The previous prime is 6899133883. The next prime is 6899133931. The reversal of 6899133888 is 8883319986.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6899133881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45631 + ... + 126017.

It is an arithmetic number, because the mean of its divisors is an integer number (237001050).

Almost surely, 2^6899133888 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 6899133888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9954044100).

6899133888 is an abundant number, since it is smaller than the sum of its proper divisors (13008954312).

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

6899133888 is a wasteful number, since it uses less digits than its factorization.

6899133888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80554 (or 80541 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 63.

The square root of 6899133888 is about 83061.0250839706. The cubic root of 6899133888 is about 1903.6986023404.

The spelling of 6899133888 in words is "six billion, eight hundred ninety-nine million, one hundred thirty-three thousand, eight hundred eighty-eight".