6620477920896 has 192 divisors, whose sum is σ = 20485993188960. Its totient is φ = 1888862976000.

The previous prime is 6620477920891. The next prime is 6620477920933. The reversal of 6620477920896 is 6980297740266.

It is a tau number, because it is divible by the number of its divisors (192).

It is not an unprimeable number, because it can be changed into a prime (6620477920891) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 12939051 + ... + 13440981.

Almost surely, 2^{6620477920896} 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 6620477920896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10242996594480).

6620477920896 is an abundant number, since it is smaller than the sum of its proper divisors (13865515268064).

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

6620477920896 is a wasteful number, since it uses less digits than its factorization.

6620477920896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502663 (or 502644 counting only the distinct ones).

The product of its (nonzero) digits is 109734912, while the sum is 66.

The spelling of 6620477920896 in words is "six trillion, six hundred twenty billion, four hundred seventy-seven million, nine hundred twenty thousand, eight hundred ninety-six".