284842381745 has 4 divisors (see below), whose sum is σ = 341810858100. Its totient is φ = 227873905392.

The previous prime is 284842381741. The next prime is 284842381753. The reversal of 284842381745 is 547183248482.

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 191003087521 + 93839294224 = 437039^2 + 306332^2 .

It is a cyclic number.

It is not a de Polignac number, because 284842381745 - 2² = 284842381741 is a prime.

It is a super-2 number, since 2×284842381745² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (284842381741) 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 3 ways as a sum of consecutive naturals, for example, 28484238170 + ... + 28484238179.

It is an arithmetic number, because the mean of its divisors is an integer number (85452714525).

Almost surely, 2^284842381745 is an apocalyptic number.

It is an amenable number.

284842381745 is a deficient number, since it is larger than the sum of its proper divisors (56968476355).

284842381745 is an equidigital number, since it uses as much as digits as its factorization.

284842381745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56968476354.

The product of its digits is 13762560, while the sum is 56.

The spelling of 284842381745 in words is "two hundred eighty-four billion, eight hundred forty-two million, three hundred eighty-one thousand, seven hundred forty-five".