285305356380 has 96 divisors (see below), whose sum is σ = 875902325760. Its totient is φ = 68813812480.

The previous prime is 285305356361. The next prime is 285305356381. The reversal of 285305356380 is 83653503582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285305356381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 967140 + ... + 1227179.

It is an arithmetic number, because the mean of its divisors is an integer number (9123982560).

Almost surely, 2^285305356380 is an apocalyptic number.

285305356380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285305356380 is an abundant number, since it is smaller than the sum of its proper divisors (590596969380).

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

285305356380 is a wasteful number, since it uses less digits than its factorization.

285305356380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194539 (or 2194537 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 285305356380 in words is "two hundred eighty-five billion, three hundred five million, three hundred fifty-six thousand, three hundred eighty".