6815854416 has 40 divisors (see below), whose sum is σ = 20122999744. Its totient is φ = 1947386880.

The previous prime is 6815854393. The next prime is 6815854429. The reversal of 6815854416 is 6144585186.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10142305 + ... + 10142976.

Almost surely, 2^6815854416 is an apocalyptic number.

It is an amenable number.

6815854416 is an abundant number, since it is smaller than the sum of its proper divisors (13307145328).

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

6815854416 is a wasteful number, since it uses less digits than its factorization.

6815854416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20285299 (or 20285293 counting only the distinct ones).

The product of its digits is 921600, while the sum is 48.

The square root of 6815854416 is about 82558.1880615121. The cubic root of 6815854416 is about 1896.0077221997.

The spelling of 6815854416 in words is "six billion, eight hundred fifteen million, eight hundred fifty-four thousand, four hundred sixteen".