2100205661046 has 16 divisors (see below), whose sum is σ = 4201923927024. Its totient is φ = 699816452864.

The previous prime is 2100205661039. The next prime is 2100205661069. The reversal of 2100205661046 is 6401665020012.

It is a junction number, because it is equal to n+sod(n) for n = 2100205660998 and 2100205661016.

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 7 ways as a sum of consecutive naturals, for example, 63007155 + ... + 63040478.

It is an arithmetic number, because the mean of its divisors is an integer number (262620245439).

Almost surely, 2^{2100205661046} is an apocalyptic number.

2100205661046 is an abundant number, since it is smaller than the sum of its proper divisors (2101718265978).

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

2100205661046 is a wasteful number, since it uses less digits than its factorization.

2100205661046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126050415.

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 2100205661046 in words is "two trillion, one hundred billion, two hundred five million, six hundred sixty-one thousand, forty-six".