2117435845 has 16 divisors (see below), whose sum is σ = 2907531648. Its totient is φ = 1450146240.

The previous prime is 2117435813. The next prime is 2117435861. The reversal of 2117435845 is 5485347112.

It is not a de Polignac number, because 2117435845 - 2⁵ = 2117435813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2117435798 and 2117435807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8914 + ... + 65683.

It is an arithmetic number, because the mean of its divisors is an integer number (181720728).

Almost surely, 2^2117435845 is an apocalyptic number.

It is an amenable number.

2117435845 is a deficient number, since it is larger than the sum of its proper divisors (790095803).

2117435845 is an equidigital number, since it uses as much as digits as its factorization.

2117435845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75420.

The product of its digits is 134400, while the sum is 40.

The square root of 2117435845 is about 46015.6043641719. The cubic root of 2117435845 is about 1284.1135250681.

The spelling of 2117435845 in words is "two billion, one hundred seventeen million, four hundred thirty-five thousand, eight hundred forty-five".