2117187087 has 16 divisors (see below), whose sum is σ = 2918361600. Its totient is φ = 1364412672.

The previous prime is 2117187073. The next prime is 2117187109. The reversal of 2117187087 is 7807817112.

It is not a de Polignac number, because 2117187087 - 2⁷ = 2117186959 is a prime.

It is a super-2 number, since 2×2117187087² = 8964962322719091138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117187287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72087 + ... + 97112.

It is an arithmetic number, because the mean of its divisors is an integer number (182397600).

Almost surely, 2^2117187087 is an apocalyptic number.

2117187087 is a deficient number, since it is larger than the sum of its proper divisors (801174513).

2117187087 is a wasteful number, since it uses less digits than its factorization.

2117187087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169342.

The product of its (nonzero) digits is 43904, while the sum is 42.

The square root of 2117187087 is about 46012.9013103934. The cubic root of 2117187087 is about 1284.0632368822.

The spelling of 2117187087 in words is "two billion, one hundred seventeen million, one hundred eighty-seven thousand, eighty-seven".