2666358988800 has 1344 divisors, whose sum is σ = 10228480960320. Its totient is φ = 606999674880.

The previous prime is 2666358988789. The next prime is 2666358988883. The reversal of 2666358988800 is 88898536662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9912115066 + ... + 9912115334.

It is an arithmetic number, because the mean of its divisors is an integer number (7610476905).

Almost surely, 2^{2666358988800} is an apocalyptic number.

2666358988800 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 2666358988800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5114240480160).

2666358988800 is an abundant number, since it is smaller than the sum of its proper divisors (7562121971520).

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

2666358988800 is a wasteful number, since it uses less digits than its factorization.

2666358988800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 238878720, while the sum is 69.

The spelling of 2666358988800 in words is "two trillion, six hundred sixty-six billion, three hundred fifty-eight million, nine hundred eighty-eight thousand, eight hundred".