285857142873 has 16 divisors (see below), whose sum is σ = 381629287872. Its totient is φ = 190328328000.

The previous prime is 285857142869. The next prime is 285857143009. The reversal of 285857142873 is 378241758582.

It is not a de Polignac number, because 285857142873 - 2² = 285857142869 is a prime.

It is a super-2 number, since 2×285857142873² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (285857142803) 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, 12028783 + ... + 12052523.

It is an arithmetic number, because the mean of its divisors is an integer number (23851830492).

Almost surely, 2^285857142873 is an apocalyptic number.

It is an amenable number.

285857142873 is a deficient number, since it is larger than the sum of its proper divisors (95772144999).

285857142873 is a wasteful number, since it uses less digits than its factorization.

285857142873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28696.

The product of its digits is 30105600, while the sum is 60.

The spelling of 285857142873 in words is "two hundred eighty-five billion, eight hundred fifty-seven million, one hundred forty-two thousand, eight hundred seventy-three".