2105512453 has 16 divisors (see below), whose sum is σ = 2345301504. Its totient is φ = 1874133360.

The previous prime is 2105512349. The next prime is 2105512459. The reversal of 2105512453 is 3542155012.

It is a de Polignac number, because none of the positive numbers 2^k-2105512453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105512459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114526 + ... + 131632.

It is an arithmetic number, because the mean of its divisors is an integer number (146581344).

Almost surely, 2^2105512453 is an apocalyptic number.

It is an amenable number.

2105512453 is a deficient number, since it is larger than the sum of its proper divisors (239789051).

2105512453 is a wasteful number, since it uses less digits than its factorization.

2105512453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17352.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 2105512453 is about 45885.8633241220. The cubic root of 2105512453 is about 1281.6986832039.

Adding to 2105512453 its reverse (3542155012), we get a palindrome (5647667465).

The spelling of 2105512453 in words is "two billion, one hundred five million, five hundred twelve thousand, four hundred fifty-three".