285840691423 has 16 divisors (see below), whose sum is σ = 364096062720. Its totient is φ = 218457634176.

The previous prime is 285840691397. The next prime is 285840691453. The reversal of 285840691423 is 324196048582.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 285840691423 - 2⁹ = 285840690911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285840691453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63208861 + ... + 63213382.

It is an arithmetic number, because the mean of its divisors is an integer number (22756003920).

Almost surely, 2^285840691423 is an apocalyptic number.

285840691423 is a deficient number, since it is larger than the sum of its proper divisors (78255371297).

285840691423 is a wasteful number, since it uses less digits than its factorization.

285840691423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126422286.

The product of its (nonzero) digits is 3317760, while the sum is 52.

The spelling of 285840691423 in words is "two hundred eighty-five billion, eight hundred forty million, six hundred ninety-one thousand, four hundred twenty-three".