2105512715 has 16 divisors (see below), whose sum is σ = 2657339136. Its totient is φ = 1599312000.

The previous prime is 2105512699. The next prime is 2105512741. The reversal of 2105512715 is 5172155012.

It is not a de Polignac number, because 2105512715 - 2⁴ = 2105512699 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119936 + ... + 136365.

It is an arithmetic number, because the mean of its divisors is an integer number (166083696).

Almost surely, 2^2105512715 is an apocalyptic number.

2105512715 is a deficient number, since it is larger than the sum of its proper divisors (551826421).

2105512715 is a wasteful number, since it uses less digits than its factorization.

2105512715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256390.

The product of its (nonzero) digits is 3500, while the sum is 29.

The square root of 2105512715 is about 45885.8661790316. The cubic root of 2105512715 is about 1281.6987363667.

Adding to 2105512715 its reverse (5172155012), we get a palindrome (7277667727).

The spelling of 2105512715 in words is "two billion, one hundred five million, five hundred twelve thousand, seven hundred fifteen".