6660793239408 has 960 divisors, whose sum is σ = 26654665420800. Its totient is φ = 1542564311040.

The previous prime is 6660793239407. The next prime is 6660793239409. The reversal of 6660793239408 is 8049323970666.

It is an interprime number because it is at equal distance from previous prime (6660793239407) and next prime (6660793239409).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660793239407) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 182634391 + ... + 182670857.

It is an arithmetic number, because the mean of its divisors is an integer number (27765276480).

Almost surely, 2^{6660793239408} is an apocalyptic number.

6660793239408 is a gapful number since it is divisible by the number (68) 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 6660793239408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13327332710400).

6660793239408 is an abundant number, since it is smaller than the sum of its proper divisors (19993872181392).

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

6660793239408 is a wasteful number, since it uses less digits than its factorization.

6660793239408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36555 (or 36526 counting only the distinct ones).

The product of its (nonzero) digits is 70543872, while the sum is 63.

The spelling of 6660793239408 in words is "six trillion, six hundred sixty billion, seven hundred ninety-three million, two hundred thirty-nine thousand, four hundred eight".