2660726880000 has 1800 divisors, whose sum is σ = 11465980211840. Its totient is φ = 600929280000.

The previous prime is 2660726879983. The next prime is 2660726880013. The reversal of 2660726880000 is 886270662.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (1800).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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 199 ways as a sum of consecutive naturals, for example, 12610079895 + ... + 12610080105.

Almost surely, 2^{2660726880000} is an apocalyptic number.

2660726880000 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 2660726880000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5732990105920).

2660726880000 is an abundant number, since it is smaller than the sum of its proper divisors (8805253331840).

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

2660726880000 is an equidigital number, since it uses as much as digits as its factorization.

2660726880000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 2660726880000 in words is "two trillion, six hundred sixty billion, seven hundred twenty-six million, eight hundred eighty thousand".