285808735785432 has 32 divisors (see below), whose sum is σ = 714756802434480. Its totient is φ = 95238250199040.

The previous prime is 285808735785431. The next prime is 285808735785473. The reversal of 285808735785432 is 234587537808582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285808735785431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1957950253 + ... + 1958096220.

Almost surely, 2^{285808735785432} is an apocalyptic number.

It is an amenable number.

285808735785432 is an abundant number, since it is smaller than the sum of its proper divisors (428948066649048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

285808735785432 is a wasteful number, since it uses less digits than its factorization.

285808735785432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3916049523 (or 3916049519 counting only the distinct ones).

The product of its (nonzero) digits is 3612672000, while the sum is 75.

The spelling of 285808735785432 in words is "two hundred eighty-five trillion, eight hundred eight billion, seven hundred thirty-five million, seven hundred eighty-five thousand, four hundred thirty-two".