667378576480 has 192 divisors, whose sum is σ = 1967384982528. Its totient is φ = 207839324160.

The previous prime is 667378576471. The next prime is 667378576493. The reversal of 667378576480 is 84675873766.

667378576480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15045214 + ... + 15089506.

It is an arithmetic number, because the mean of its divisors is an integer number (10246796784).

Almost surely, 2^667378576480 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 667378576480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (983692491264).

667378576480 is an abundant number, since it is smaller than the sum of its proper divisors (1300006406048).

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

667378576480 is a wasteful number, since it uses less digits than its factorization.

667378576480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45549 (or 45541 counting only the distinct ones).

The product of its (nonzero) digits is 284497920, while the sum is 67.

The spelling of 667378576480 in words is "six hundred sixty-seven billion, three hundred seventy-eight million, five hundred seventy-six thousand, four hundred eighty".