2117239545 has 32 divisors (see below), whose sum is σ = 3458242944. Its totient is φ = 1105804800.

The previous prime is 2117239541. The next prime is 2117239609. The reversal of 2117239545 is 5459327112.

It is not a de Polignac number, because 2117239545 - 2² = 2117239541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2117239541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208230 + ... + 218160.

It is an arithmetic number, because the mean of its divisors is an integer number (108070092).

Almost surely, 2^2117239545 is an apocalyptic number.

It is an amenable number.

2117239545 is a deficient number, since it is larger than the sum of its proper divisors (1341003399).

2117239545 is a wasteful number, since it uses less digits than its factorization.

2117239545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10233.

The product of its digits is 75600, while the sum is 39.

The square root of 2117239545 is about 46013.4713426405. The cubic root of 2117239545 is about 1284.0738419650.

The spelling of 2117239545 in words is "two billion, one hundred seventeen million, two hundred thirty-nine thousand, five hundred forty-five".