6866742544 has 40 divisors (see below), whose sum is σ = 14541355008. Its totient is φ = 3127165440.

The previous prime is 6866742521. The next prime is 6866742577. The reversal of 6866742544 is 4452476686.

It is a junction number, because it is equal to n+sod(n) for n = 6866742491 and 6866742500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398752 + ... + 415615.

Almost surely, 2^6866742544 is an apocalyptic number.

It is an amenable number.

6866742544 is an abundant number, since it is smaller than the sum of its proper divisors (7674612464).

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

6866742544 is a wasteful number, since it uses less digits than its factorization.

6866742544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814423 (or 814417 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 52.

The square root of 6866742544 is about 82865.8104648715. The cubic root of 6866742544 is about 1900.7146475092.

The spelling of 6866742544 in words is "six billion, eight hundred sixty-six million, seven hundred forty-two thousand, five hundred forty-four".