285438099868 has 6 divisors (see below), whose sum is σ = 499516674776. Its totient is φ = 142719049932.

The previous prime is 285438099787. The next prime is 285438099899. The reversal of 285438099868 is 868990834582.

It is a junction number, because it is equal to n+sod(n) for n = 285438099797 and 285438099806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35679762480 + ... + 35679762487.

Almost surely, 2^285438099868 is an apocalyptic number.

It is an amenable number.

285438099868 is a deficient number, since it is larger than the sum of its proper divisors (214078574908).

285438099868 is a wasteful number, since it uses less digits than its factorization.

285438099868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71359524971 (or 71359524969 counting only the distinct ones).

The product of its (nonzero) digits is 238878720, while the sum is 70.

The spelling of 285438099868 in words is "two hundred eighty-five billion, four hundred thirty-eight million, ninety-nine thousand, eight hundred sixty-eight".