2117897575 has 24 divisors (see below), whose sum is σ = 2701267088. Its totient is φ = 1646023680.

The previous prime is 2117897563. The next prime is 2117897609. The reversal of 2117897575 is 5757987112.

It is not a de Polignac number, because 2117897575 - 2¹³ = 2117889383 is a prime.

It is a Duffinian number.

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 23 ways as a sum of consecutive naturals, for example, 815479 + ... + 818071.

Almost surely, 2^2117897575 is an apocalyptic number.

2117897575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2117897575 is a deficient number, since it is larger than the sum of its proper divisors (583369513).

2117897575 is a wasteful number, since it uses less digits than its factorization.

2117897575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3523 (or 3518 counting only the distinct ones).

The product of its digits is 1234800, while the sum is 52.

The square root of 2117897575 is about 46020.6211931130. The cubic root of 2117897575 is about 1284.2068566083.

The spelling of 2117897575 in words is "two billion, one hundred seventeen million, eight hundred ninety-seven thousand, five hundred seventy-five".