285363831046881 has 4 divisors (see below), whose sum is σ = 380485108062512. Its totient is φ = 190242554031252.

The previous prime is 285363831046871. The next prime is 285363831046927. The reversal of 285363831046881 is 188640138363582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 285363831046881 - 2¹⁴ = 285363831030497 is a prime.

It is a super-2 number, since 2×285363831046881² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285363831046831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47560638507811 + ... + 47560638507816.

It is an arithmetic number, because the mean of its divisors is an integer number (95121277015628).

Almost surely, 2^{285363831046881} is an apocalyptic number.

It is an amenable number.

285363831046881 is a deficient number, since it is larger than the sum of its proper divisors (95121277015631).

285363831046881 is an equidigital number, since it uses as much as digits as its factorization.

285363831046881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95121277015630.

The product of its (nonzero) digits is 159252480, while the sum is 66.

The spelling of 285363831046881 in words is "two hundred eighty-five trillion, three hundred sixty-three billion, eight hundred thirty-one million, forty-six thousand, eight hundred eighty-one".