2643398980800 has 168 divisors, whose sum is σ = 8673880290000. Its totient is φ = 704798392320.

The previous prime is 2643398980769. The next prime is 2643398980813. The reversal of 2643398980800 is 80898933462.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34180576 + ... + 34257824.

Almost surely, 2^{2643398980800} is an apocalyptic number.

2643398980800 is a gapful number since it is divisible by the number (20) 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 2643398980800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4336940145000).

2643398980800 is an abundant number, since it is smaller than the sum of its proper divisors (6030481309200).

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

2643398980800 is a wasteful number, since it uses less digits than its factorization.

2643398980800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84403 (or 84388 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 60.

The spelling of 2643398980800 in words is "two trillion, six hundred forty-three billion, three hundred ninety-eight million, nine hundred eighty thousand, eight hundred".