2105260647 has 24 divisors (see below), whose sum is σ = 3326924016. Its totient is φ = 1180303488.

The previous prime is 2105260643. The next prime is 2105260649. The reversal of 2105260647 is 7460625012.

It is not a de Polignac number, because 2105260647 - 2² = 2105260643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105260643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127318 + ... + 142899.

It is an arithmetic number, because the mean of its divisors is an integer number (138621834).

Almost surely, 2^2105260647 is an apocalyptic number.

2105260647 is a deficient number, since it is larger than the sum of its proper divisors (1221663369).

2105260647 is a wasteful number, since it uses less digits than its factorization.

2105260647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270287 (or 270280 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 2105260647 is about 45883.1194122632. The cubic root of 2105260647 is about 1281.6475868093.

Adding to 2105260647 its reverse (7460625012), we get a palindrome (9565885659).

The spelling of 2105260647 in words is "two billion, one hundred five million, two hundred sixty thousand, six hundred forty-seven".