284427873081 has 24 divisors (see below), whose sum is σ = 460302608064. Its totient is φ = 167721593760.

The previous prime is 284427873061. The next prime is 284427873089. The reversal of 284427873081 is 180378724482.

284427873081 is a `hidden beast` number, since 28 + 44 + 278 + 7 + 308 + 1 = 666.

It is not a de Polignac number, because 284427873081 - 2²³ = 284419484473 is a prime.

It is a super-2 number, since 2×284427873081² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (284427873089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38820781 + ... + 38828106.

It is an arithmetic number, because the mean of its divisors is an integer number (19179275336).

Almost surely, 2^284427873081 is an apocalyptic number.

It is an amenable number.

284427873081 is a deficient number, since it is larger than the sum of its proper divisors (175874734983).

284427873081 is a wasteful number, since it uses less digits than its factorization.

284427873081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77648941 (or 77648938 counting only the distinct ones).

The product of its (nonzero) digits is 4816896, while the sum is 54.

The spelling of 284427873081 in words is "two hundred eighty-four billion, four hundred twenty-seven million, eight hundred seventy-three thousand, eighty-one".