285771722086656 has 243 divisors, whose sum is σ = 892239500325537. Its totient is φ = 87926514923520.

The previous prime is 285771722086577. The next prime is 285771722086681. The reversal of 285771722086656 is 656680227177582.

It is a happy number.

The square root of 285771722086656 is 16904784.

It is a perfect power (a square), and thus also a powerful number.

285771722086656 is a `hidden beast` number, since 2 + 85 + 77 + 172 + 208 + 66 + 56 = 666.

It can be written as a sum of positive squares in only one way, i.e., 42273923385600 + 243497798701056 = 6501840^2 + 15604416^2 .

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 10548571671 + ... + 10548598761.

Almost surely, 2^{285771722086656} is an apocalyptic number.

285771722086656 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

285771722086656 is the 16904784-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285771722086656

285771722086656 is an abundant number, since it is smaller than the sum of its proper divisors (606467778238881).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

285771722086656 is an frugal number, since it uses more digits than its factorization.

285771722086656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54230 (or 27109 counting only the distinct ones).

The product of its (nonzero) digits is 948326400, while the sum is 72.

The spelling of 285771722086656 in words is "two hundred eighty-five trillion, seven hundred seventy-one billion, seven hundred twenty-two million, eighty-six thousand, six hundred fifty-six".