2117532686 has 16 divisors (see below), whose sum is σ = 3318271488. Its totient is φ = 1012265400.

The previous prime is 2117532671. The next prime is 2117532707. The reversal of 2117532686 is 6862357112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200600 + ... + 210891.

It is an arithmetic number, because the mean of its divisors is an integer number (207391968).

Almost surely, 2^2117532686 is an apocalyptic number.

2117532686 is a deficient number, since it is larger than the sum of its proper divisors (1200738802).

2117532686 is a wasteful number, since it uses less digits than its factorization.

2117532686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411607.

The product of its digits is 120960, while the sum is 41.

The square root of 2117532686 is about 46016.6566147520. The cubic root of 2117532686 is about 1284.1331010949.

Adding to 2117532686 its reverse (6862357112), we get a palindrome (8979889798).

The spelling of 2117532686 in words is "two billion, one hundred seventeen million, five hundred thirty-two thousand, six hundred eighty-six".