2105171599 has 2 divisors, whose sum is σ = 2105171600. Its totient is φ = 2105171598.

The previous prime is 2105171561. The next prime is 2105171603. The reversal of 2105171599 is 9951715012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2105171599 is a prime.

It is a super-2 number, since 2×2105171599² = 8863494922472433602, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2105171099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052585799 + 1052585800.

It is an arithmetic number, because the mean of its divisors is an integer number (1052585800).

Almost surely, 2^2105171599 is an apocalyptic number.

2105171599 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105171599 is an equidigital number, since it uses as much as digits as its factorization.

2105171599 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28350, while the sum is 40.

The square root of 2105171599 is about 45882.1490233402. The cubic root of 2105171599 is about 1281.6295162419.

The spelling of 2105171599 in words is "two billion, one hundred five million, one hundred seventy-one thousand, five hundred ninety-nine".