2105500005 has 48 divisors (see below), whose sum is σ = 4305460224. Its totient is φ = 931461120.

The previous prime is 2105499983. The next prime is 2105500027. The reversal of 2105500005 is 5000055012.

It is an interprime number because it is at equal distance from previous prime (2105499983) and next prime (2105500027).

It is not a de Polignac number, because 2105500005 - 2¹⁰ = 2105498981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 98044 + ... + 117573.

It is an arithmetic number, because the mean of its divisors is an integer number (89697088).

Almost surely, 2^2105500005 is an apocalyptic number.

It is an amenable number.

2105500005 is an abundant number, since it is smaller than the sum of its proper divisors (2199960219).

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

2105500005 is a wasteful number, since it uses less digits than its factorization.

2105500005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215666 (or 215663 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 2105500005 is about 45885.7276830171. The cubic root of 2105500005 is about 1281.6961573554.

Adding to 2105500005 its reverse (5000055012), we get a palindrome (7105555017).

The spelling of 2105500005 in words is "two billion, one hundred five million, five hundred thousand, five".