285707434827 has 18 divisors (see below), whose sum is σ = 384485044476. Its totient is φ = 188716906560.

The previous prime is 285707434799. The next prime is 285707434853. The reversal of 285707434827 is 728434707582.

It is not a de Polignac number, because 285707434827 - 2¹² = 285707430731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (285707434867) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 104615052 + ... + 104617782.

Almost surely, 2^285707434827 is an apocalyptic number.

285707434827 is a deficient number, since it is larger than the sum of its proper divisors (98777609649).

285707434827 is an frugal number, since it uses more digits than its factorization.

285707434827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5691 (or 2847 counting only the distinct ones).

The product of its (nonzero) digits is 21073920, while the sum is 57.

The spelling of 285707434827 in words is "two hundred eighty-five billion, seven hundred seven million, four hundred thirty-four thousand, eight hundred twenty-seven".