285260823128 has 8 divisors (see below), whose sum is σ = 534864043380. Its totient is φ = 142630411560.

The previous prime is 285260823101. The next prime is 285260823167. The reversal of 285260823128 is 821328062582.

It is a tau number, because it is divible by the number of its divisors (8).

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, 17828801438 + ... + 17828801453.

Almost surely, 2^285260823128 is an apocalyptic number.

It is an amenable number.

285260823128 is a deficient number, since it is larger than the sum of its proper divisors (249603220252).

285260823128 is a wasteful number, since it uses less digits than its factorization.

285260823128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35657602897 (or 35657602893 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 47.

The spelling of 285260823128 in words is "two hundred eighty-five billion, two hundred sixty million, eight hundred twenty-three thousand, one hundred twenty-eight".