285678348781 has 8 divisors (see below), whose sum is σ = 326928968064. Its totient is φ = 244537586160.

The previous prime is 285678348763. The next prime is 285678348797. The reversal of 285678348781 is 187843876582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 285678348781 - 2¹⁵ = 285678316013 is a prime.

It is a super-2 number, since 2×285678348781² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285676348781) 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, 27458590 + ... + 27468991.

It is an arithmetic number, because the mean of its divisors is an integer number (40866121008).

Almost surely, 2^285678348781 is an apocalyptic number.

It is an amenable number.

285678348781 is a deficient number, since it is larger than the sum of its proper divisors (41250619283).

285678348781 is an equidigital number, since it uses as much as digits as its factorization.

285678348781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54928331.

The product of its digits is 144506880, while the sum is 67.

The spelling of 285678348781 in words is "two hundred eighty-five billion, six hundred seventy-eight million, three hundred forty-eight thousand, seven hundred eighty-one".