384395209569 has 12 divisors (see below), whose sum is σ = 634557171456. Its totient is φ = 219654405432.

The previous prime is 384395209547. The next prime is 384395209571. The reversal of 384395209569 is 965902593483.

384395209569 is a `hidden beast` number, since 3 + 8 + 43 + 9 + 5 + 20 + 9 + 569 = 666.

It is not a de Polignac number, because 384395209569 - 2²⁵ = 384361655137 is a prime.

It is a super-2 number, since 2×384395209569² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 6101511263 = 384395209569 / (3 + 8 + 4 + 3 + 9 + 5 + 2 + 0 + 9 + 5 + 6 + 9).

It is not an unprimeable number, because it can be changed into a prime (384395209369) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3050755569 + ... + 3050755694.

It is an arithmetic number, because the mean of its divisors is an integer number (52879764288).

Almost surely, 2^384395209569 is an apocalyptic number.

It is an amenable number.

384395209569 is a deficient number, since it is larger than the sum of its proper divisors (250161961887).

384395209569 is a wasteful number, since it uses less digits than its factorization.

384395209569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6101511276 (or 6101511273 counting only the distinct ones).

The product of its (nonzero) digits is 62985600, while the sum is 63.

The spelling of 384395209569 in words is "three hundred eighty-four billion, three hundred ninety-five million, two hundred nine thousand, five hundred sixty-nine".