678846841512 has 32 divisors (see below), whose sum is σ = 1939562404800. Its totient is φ = 193956240384.

The previous prime is 678846841501. The next prime is 678846841571. The reversal of 678846841512 is 215148648876.

It is a happy number.

It is a super-2 number, since 2×678846841512² (a number of 24 digits) contains 22 as substring.

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, 2020377337 + ... + 2020377672.

It is an arithmetic number, because the mean of its divisors is an integer number (60611325150).

Almost surely, 2^678846841512 is an apocalyptic number.

It is an amenable number.

678846841512 is an abundant number, since it is smaller than the sum of its proper divisors (1260715563288).

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

678846841512 is a wasteful number, since it uses less digits than its factorization.

678846841512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040755025 (or 4040755021 counting only the distinct ones).

The product of its digits is 20643840, while the sum is 60.

The spelling of 678846841512 in words is "six hundred seventy-eight billion, eight hundred forty-six million, eight hundred forty-one thousand, five hundred twelve".