2117258071 has 4 divisors (see below), whose sum is σ = 2190267000. Its totient is φ = 2044249144.

The previous prime is 2117258069. The next prime is 2117258083. The reversal of 2117258071 is 1708527112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2117258071 - 2¹ = 2117258069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117258971) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 36504421 + ... + 36504478.

It is an arithmetic number, because the mean of its divisors is an integer number (547566750).

Almost surely, 2^2117258071 is an apocalyptic number.

2117258071 is a deficient number, since it is larger than the sum of its proper divisors (73008929).

2117258071 is an equidigital number, since it uses as much as digits as its factorization.

2117258071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73008928.

The product of its (nonzero) digits is 7840, while the sum is 34.

The square root of 2117258071 is about 46013.6726528105. The cubic root of 2117258071 is about 1284.0775872006.

The spelling of 2117258071 in words is "two billion, one hundred seventeen million, two hundred fifty-eight thousand, seventy-one".