285505409432 has 16 divisors (see below), whose sum is σ = 540622868400. Its totient is φ = 141339311200.

The previous prime is 285505409381. The next prime is 285505409459. The reversal of 285505409432 is 234904505582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176673332 + ... + 176674947.

It is an arithmetic number, because the mean of its divisors is an integer number (33788929275).

Almost surely, 2^285505409432 is an apocalyptic number.

It is an amenable number.

285505409432 is a deficient number, since it is larger than the sum of its proper divisors (255117458968).

285505409432 is a wasteful number, since it uses less digits than its factorization.

285505409432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353348386 (or 353348382 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 47.

The spelling of 285505409432 in words is "two hundred eighty-five billion, five hundred five million, four hundred nine thousand, four hundred thirty-two".