384505281205 has 4 divisors (see below), whose sum is σ = 461406337452. Its totient is φ = 307604224960.

The previous prime is 384505281191. The next prime is 384505281269. The reversal of 384505281205 is 502182505483.

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

It can be written as a sum of positive squares in 2 ways, for example, as 254219656804 + 130285624401 = 504202^2 + 360951^2 .

It is not a de Polignac number, because 384505281205 - 2¹⁵ = 384505248437 is a prime.

It is a super-2 number, since 2×384505281205² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38450528116 + ... + 38450528125.

It is an arithmetic number, because the mean of its divisors is an integer number (115351584363).

Almost surely, 2^384505281205 is an apocalyptic number.

It is an amenable number.

384505281205 is a deficient number, since it is larger than the sum of its proper divisors (76901056247).

384505281205 is an equidigital number, since it uses as much as digits as its factorization.

384505281205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76901056246.

The product of its (nonzero) digits is 384000, while the sum is 43.

Adding to 384505281205 its reverse (502182505483), we get a palindrome (886687786688).

The spelling of 384505281205 in words is "three hundred eighty-four billion, five hundred five million, two hundred eighty-one thousand, two hundred five".