5217657985 has 16 divisors (see below), whose sum is σ = 6548636160. Its totient is φ = 3983341120.

The previous prime is 5217657983. The next prime is 5217658009. The reversal of 5217657985 is 5897567125.

It is not a de Polignac number, because 5217657985 - 2¹ = 5217657983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5217657983) 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 15 ways as a sum of consecutive naturals, for example, 3070 + ... + 102199.

It is an arithmetic number, because the mean of its divisors is an integer number (409289760).

Almost surely, 2^5217657985 is an apocalyptic number.

It is an amenable number.

5217657985 is a deficient number, since it is larger than the sum of its proper divisors (1330978175).

5217657985 is a wasteful number, since it uses less digits than its factorization.

5217657985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105728.

The product of its digits is 5292000, while the sum is 55.

The square root of 5217657985 is about 72233.3578410972. The cubic root of 5217657985 is about 1734.4370255274.

The spelling of 5217657985 in words is "five billion, two hundred seventeen million, six hundred fifty-seven thousand, nine hundred eighty-five".