2100555055512 has 96 divisors (see below), whose sum is σ = 5770628192160. Its totient is φ = 690144000000.

The previous prime is 2100555055493. The next prime is 2100555055523. The reversal of 2100555055512 is 2155505550012.

2100555055512 is a `hidden beast` number, since 2 + 1 + 0 + 0 + 5 + 550 + 55 + 51 + 2 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20401762 + ... + 20504462.

It is an arithmetic number, because the mean of its divisors is an integer number (60110710335).

Almost surely, 2^{2100555055512} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2100555055512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2885314096080).

2100555055512 is an abundant number, since it is smaller than the sum of its proper divisors (3670073136648).

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

2100555055512 is a wasteful number, since it uses less digits than its factorization.

2100555055512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106785 (or 106778 counting only the distinct ones).

The product of its (nonzero) digits is 62500, while the sum is 36.

The spelling of 2100555055512 in words is "two trillion, one hundred billion, five hundred fifty-five million, fifty-five thousand, five hundred twelve".