6620666976000 has 3456 divisors, whose sum is σ = 31348667750400. Its totient is φ = 1346678784000.

The previous prime is 6620666975987. The next prime is 6620666976029. The reversal of 6620666976000 is 6796660266.

It is a tau number, because it is divible by the number of its divisors (3456).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 60740063946 + ... + 60740064054.

Almost surely, 2^{6620666976000} is an apocalyptic number.

6620666976000 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 6620666976000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15674333875200).

6620666976000 is an abundant number, since it is smaller than the sum of its proper divisors (24728000774400).

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

6620666976000 is a wasteful number, since it uses less digits than its factorization.

6620666976000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 54.

The spelling of 6620666976000 in words is "six trillion, six hundred twenty billion, six hundred sixty-six million, nine hundred seventy-six thousand".