285667766081 has 8 divisors (see below), whose sum is σ = 286206464544. Its totient is φ = 285129203040.

The previous prime is 285667766003. The next prime is 285667766093. The reversal of 285667766081 is 180667766582.

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

It is a cyclic number.

It is not a de Polignac number, because 285667766081 - 2²² = 285663571777 is a prime.

It is a super-2 number, since 2×285667766081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285667766281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4845326 + ... + 4903928.

It is an arithmetic number, because the mean of its divisors is an integer number (35775808068).

Almost surely, 2^285667766081 is an apocalyptic number.

It is an amenable number.

285667766081 is a deficient number, since it is larger than the sum of its proper divisors (538698463).

285667766081 is an equidigital number, since it uses as much as digits as its factorization.

285667766081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67711.

The product of its (nonzero) digits is 40642560, while the sum is 62.

The spelling of 285667766081 in words is "two hundred eighty-five billion, six hundred sixty-seven million, seven hundred sixty-six thousand, eighty-one".