384855087217 has 16 divisors (see below), whose sum is σ = 410430915072. Its totient is φ = 360027581760.

The previous prime is 384855087209. The next prime is 384855087269. The reversal of 384855087217 is 712780558483.

It is not a de Polignac number, because 384855087217 - 2³ = 384855087209 is a prime.

It is a super-2 number, since 2×384855087217² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384855087317) 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 15 ways as a sum of consecutive naturals, for example, 1363963 + ... + 1621759.

It is an arithmetic number, because the mean of its divisors is an integer number (25651932192).

Almost surely, 2^384855087217 is an apocalyptic number.

It is an amenable number.

384855087217 is a deficient number, since it is larger than the sum of its proper divisors (25575827855).

384855087217 is a wasteful number, since it uses less digits than its factorization.

384855087217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259248.

The product of its (nonzero) digits is 15052800, while the sum is 58.

The spelling of 384855087217 in words is "three hundred eighty-four billion, eight hundred fifty-five million, eighty-seven thousand, two hundred seventeen".