2111550006720 has 1344 divisors, whose sum is σ = 8994632394240. Its totient is φ = 413857382400.

The previous prime is 2111550006707. The next prime is 2111550006803. The reversal of 2111550006720 is 276000551112.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 3903049650 + ... + 3903050190.

Almost surely, 2^{2111550006720} is an apocalyptic number.

2111550006720 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 2111550006720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4497316197120).

2111550006720 is an abundant number, since it is smaller than the sum of its proper divisors (6883082387520).

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

2111550006720 is a wasteful number, since it uses less digits than its factorization.

2111550006720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002 (or 985 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 30.

Adding to 2111550006720 its reverse (276000551112), we get a palindrome (2387550557832).

The spelling of 2111550006720 in words is "two trillion, one hundred eleven billion, five hundred fifty million, six thousand, seven hundred twenty".