285448693847 has 4 divisors (see below), whose sum is σ = 285450039840. Its totient is φ = 285447347856.

The previous prime is 285448693843. The next prime is 285448693927. The reversal of 285448693847 is 748396844582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 748396844582 = 2 ⋅374198422291.

It is a cyclic number.

It is not a de Polignac number, because 285448693847 - 2² = 285448693843 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 (285448693843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277358 + ... + 804875.

It is an arithmetic number, because the mean of its divisors is an integer number (71362509960).

Almost surely, 2^285448693847 is an apocalyptic number.

285448693847 is a deficient number, since it is larger than the sum of its proper divisors (1345993).

285448693847 is a wasteful number, since it uses less digits than its factorization.

285448693847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345992.

The product of its digits is 371589120, while the sum is 68.

The spelling of 285448693847 in words is "two hundred eighty-five billion, four hundred forty-eight million, six hundred ninety-three thousand, eight hundred forty-seven".