285840010001 has 32 divisors (see below), whose sum is σ = 372810816000. Its totient is φ = 213034590720.

The previous prime is 285840009991. The next prime is 285840010031. The reversal of 285840010001 is 100010048582.

It is not a de Polignac number, because 285840010001 - 2²⁶ = 285772901137 is a prime.

It is a super-2 number, since 2×285840010001² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (285840010031) 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, 1212701 + ... + 1429098.

It is an arithmetic number, because the mean of its divisors is an integer number (11650338000).

Almost surely, 2^285840010001 is an apocalyptic number.

It is an amenable number.

285840010001 is a deficient number, since it is larger than the sum of its proper divisors (86970805999).

285840010001 is a wasteful number, since it uses less digits than its factorization.

285840010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2641889.

The product of its (nonzero) digits is 2560, while the sum is 29.

Adding to 285840010001 its reverse (100010048582), we get a palindrome (385850058583).

The spelling of 285840010001 in words is "two hundred eighty-five billion, eight hundred forty million, ten thousand, one".