2111545440000 has 1080 divisors, whose sum is σ = 7878152121840. Its totient is φ = 543449088000.

The previous prime is 2111545439963. The next prime is 2111545440079. The reversal of 2111545440000 is 445451112.

2111545440000 is a `hidden beast` number, since 2 + 1 + 115 + 4 + 544 + 0 + 0 + 0 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 5571359811 + ... + 5571360189.

It is an arithmetic number, because the mean of its divisors is an integer number (7294585298).

Almost surely, 2^{2111545440000} is an apocalyptic number.

2111545440000 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 2111545440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3939076060920).

2111545440000 is an abundant number, since it is smaller than the sum of its proper divisors (5766606681840).

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

2111545440000 is an equidigital number, since it uses as much as digits as its factorization.

2111545440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The spelling of 2111545440000 in words is "two trillion, one hundred eleven billion, five hundred forty-five million, four hundred forty thousand".