285744428863 has 4 divisors (see below), whose sum is σ = 285746314840. Its totient is φ = 285742542888.

The previous prime is 285744428857. The next prime is 285744428869. The reversal of 285744428863 is 368824447582.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 368824447582 = 2 ⋅184412223791.

It is an interprime number because it is at equal distance from previous prime (285744428857) and next prime (285744428869).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285744428863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285744428869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 693768 + ... + 1026061.

It is an arithmetic number, because the mean of its divisors is an integer number (71436578710).

Almost surely, 2^285744428863 is an apocalyptic number.

285744428863 is a deficient number, since it is larger than the sum of its proper divisors (1885977).

285744428863 is a wasteful number, since it uses less digits than its factorization.

285744428863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885976.

The product of its digits is 82575360, while the sum is 61.

The spelling of 285744428863 in words is "two hundred eighty-five billion, seven hundred forty-four million, four hundred twenty-eight thousand, eight hundred sixty-three".