6847121478 has 8 divisors (see below), whose sum is σ = 13694242968. Its totient is φ = 2282373824.

The previous prime is 6847121471. The next prime is 6847121507. The reversal of 6847121478 is 8741217486.

It is a sphenic number, since it is the product of 3 distinct primes.

6847121478 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6847121471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570593451 + ... + 570593462.

It is an arithmetic number, because the mean of its divisors is an integer number (1711780371).

Almost surely, 2^6847121478 is an apocalyptic number.

6847121478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6847121478 is a wasteful number, since it uses less digits than its factorization.

6847121478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141186918.

The product of its digits is 602112, while the sum is 48.

The square root of 6847121478 is about 82747.3351715933. The cubic root of 6847121478 is about 1898.9025497931.

The spelling of 6847121478 in words is "six billion, eight hundred forty-seven million, one hundred twenty-one thousand, four hundred seventy-eight".