6881434578 has 12 divisors (see below), whose sum is σ = 14909774958. Its totient is φ = 2293811520.

The previous prime is 6881434541. The next prime is 6881434579. The reversal of 6881434578 is 8754341886.

6881434578 is a `hidden beast` number, since 68 + 8 + 1 + 4 + 3 + 4 + 578 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4936889169 + 1944545409 = 70263^2 + 44097^2 .

It is not an unprimeable number, because it can be changed into a prime (6881434579) 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 5 ways as a sum of consecutive naturals, for example, 191150943 + ... + 191150978.

Almost surely, 2^6881434578 is an apocalyptic number.

6881434578 is an abundant number, since it is smaller than the sum of its proper divisors (8028340380).

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

6881434578 is a wasteful number, since it uses less digits than its factorization.

6881434578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382301929 (or 382301926 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 54.

The square root of 6881434578 is about 82954.4126493582. The cubic root of 6881434578 is about 1902.0692670824.

The spelling of 6881434578 in words is "six billion, eight hundred eighty-one million, four hundred thirty-four thousand, five hundred seventy-eight".