678738713952 has 288 divisors, whose sum is σ = 2036482560000. Its totient is φ = 197300054016.

The previous prime is 678738713929. The next prime is 678738713957. The reversal of 678738713952 is 259317837876.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678738713957) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 118059174 + ... + 118064922.

It is an arithmetic number, because the mean of its divisors is an integer number (7071120000).

Almost surely, 2^678738713952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678738713952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1018241280000).

678738713952 is an abundant number, since it is smaller than the sum of its proper divisors (1357743846048).

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

678738713952 is a wasteful number, since it uses less digits than its factorization.

678738713952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6190 (or 6169 counting only the distinct ones).

The product of its digits is 106686720, while the sum is 66.

The spelling of 678738713952 in words is "six hundred seventy-eight billion, seven hundred thirty-eight million, seven hundred thirteen thousand, nine hundred fifty-two".