6616693980000 has 2400 divisors, whose sum is σ = 27445449144960. Its totient is φ = 1552711680000.

The previous prime is 6616693979983. The next prime is 6616693980007. The reversal of 6616693980000 is 893966166.

It is a tau number, because it is divible by the number of its divisors (2400).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6616693980007) by changing a digit.

It is a polite number, since it can be written in 399 ways as a sum of consecutive naturals, for example, 68213339952 + ... + 68213340048.

Almost surely, 2^{6616693980000} is an apocalyptic number.

6616693980000 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 6616693980000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13722724572480).

6616693980000 is an abundant number, since it is smaller than the sum of its proper divisors (20828755164960).

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

6616693980000 is a wasteful number, since it uses less digits than its factorization.

6616693980000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The spelling of 6616693980000 in words is "six trillion, six hundred sixteen billion, six hundred ninety-three million, nine hundred eighty thousand".