6659473674240 has 416 divisors, whose sum is σ = 23688922435200. Its totient is φ = 1774833500160.

The previous prime is 6659473674121. The next prime is 6659473674247. The reversal of 6659473674240 is 424763749566.

6659473674240 is a `hidden beast` number, since 6 + 6 + 59 + 473 + 6 + 74 + 2 + 40 = 666.

It is not an unprimeable number, because it can be changed into a prime (6659473674247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1781082291 + ... + 1781086029.

Almost surely, 2^{6659473674240} is an apocalyptic number.

6659473674240 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 6659473674240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11844461217600).

6659473674240 is an abundant number, since it is smaller than the sum of its proper divisors (17029448760960).

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

6659473674240 is a wasteful number, since it uses less digits than its factorization.

6659473674240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6998 (or 6970 counting only the distinct ones).

The product of its (nonzero) digits is 182891520, while the sum is 63.

The spelling of 6659473674240 in words is "six trillion, six hundred fifty-nine billion, four hundred seventy-three million, six hundred seventy-four thousand, two hundred forty".