678416947500 has 120 divisors (see below), whose sum is σ = 1978610079600. Its totient is φ = 180862976000.

The previous prime is 678416947469. The next prime is 678416947501. The reversal of 678416947500 is 5749614876.

It is not an unprimeable number, because it can be changed into a prime (678416947501) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 34857772 + ... + 34877228.

It is an arithmetic number, because the mean of its divisors is an integer number (16488417330).

Almost surely, 2^678416947500 is an apocalyptic number.

678416947500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678416947500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (989305039800).

678416947500 is an abundant number, since it is smaller than the sum of its proper divisors (1300193132100).

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

678416947500 is a wasteful number, since it uses less digits than its factorization.

678416947500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24133 (or 24116 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 678416947500 in words is "six hundred seventy-eight billion, four hundred sixteen million, nine hundred forty-seven thousand, five hundred".