6868088136 has 144 divisors (see below), whose sum is σ = 23302597500. Its totient is φ = 1811351808.

The previous prime is 6868088119. The next prime is 6868088153. The reversal of 6868088136 is 6318808686.

It is an interprime number because it is at equal distance from previous prime (6868088119) and next prime (6868088153).

It can be written as a sum of positive squares in 2 ways, for example, as 4949122500 + 1918965636 = 70350^2 + 43806^2 .

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 29011 + ... + 120738.

Almost surely, 2^6868088136 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 6868088136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11651298750).

6868088136 is an abundant number, since it is smaller than the sum of its proper divisors (16434509364).

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

6868088136 is a wasteful number, since it uses less digits than its factorization.

6868088136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149788 (or 149774 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The square root of 6868088136 is about 82873.9291695525. The cubic root of 6868088136 is about 1900.8387927094.

It can be divided in two parts, 68680 and 88136, that added together give a square (156816 = 396²).

The spelling of 6868088136 in words is "six billion, eight hundred sixty-eight million, eighty-eight thousand, one hundred thirty-six".