2105213163064 has 16 divisors (see below), whose sum is σ = 4306117833720. Its totient is φ = 956915074080.

The previous prime is 2105213163061. The next prime is 2105213163107. The reversal of 2105213163064 is 4603613125012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105213163061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11961438339 + ... + 11961438514.

Almost surely, 2^{2105213163064} is an apocalyptic number.

It is an amenable number.

2105213163064 is an abundant number, since it is smaller than the sum of its proper divisors (2200904670656).

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

2105213163064 is a wasteful number, since it uses less digits than its factorization.

2105213163064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23922876870 (or 23922876866 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

Adding to 2105213163064 its reverse (4603613125012), we get a palindrome (6708826288076).

The spelling of 2105213163064 in words is "two trillion, one hundred five billion, two hundred thirteen million, one hundred sixty-three thousand, sixty-four".