659947678800 has 240 divisors, whose sum is σ = 2196145961472. Its totient is φ = 169222809600.

The previous prime is 659947678771. The next prime is 659947678813. The reversal of 659947678800 is 8876749956.

659947678800 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5783902 + ... + 5896898.

Almost surely, 2^659947678800 is an apocalyptic number.

659947678800 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 659947678800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1098072980736).

659947678800 is an abundant number, since it is smaller than the sum of its proper divisors (1536198282672).

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

659947678800 is a wasteful number, since it uses less digits than its factorization.

659947678800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113206 (or 113195 counting only the distinct ones).

The product of its (nonzero) digits is 182891520, while the sum is 69.

The spelling of 659947678800 in words is "six hundred fifty-nine billion, nine hundred forty-seven million, six hundred seventy-eight thousand, eight hundred".