282980377681 has 9 divisors (see below), whose sum is σ = 284649295323. Its totient is φ = 281321197560.

The previous prime is 282980377679. The next prime is 282980377717. The reversal of 282980377681 is 186773089282.

The square root of 282980377681 is 531959.

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

It can be written as a sum of positive squares in only one way, i.e., 3118217281 + 279862160400 = 55841^2 + 529020^2 .

It is not a de Polignac number, because 282980377681 - 2¹ = 282980377679 is a prime.

It is a super-2 number, since 2×282980377681² (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 (282980377601) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 96283110 + ... + 96286048.

Almost surely, 2^282980377681 is an apocalyptic number.

282980377681 is the 531959-th square number.

282980377681 is the 265980-th centered octagonal number.

It is an amenable number.

282980377681 is a deficient number, since it is larger than the sum of its proper divisors (1668917642).

282980377681 is an frugal number, since it uses more digits than its factorization.

282980377681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6240 (or 3120 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 61.

The spelling of 282980377681 in words is "two hundred eighty-two billion, nine hundred eighty million, three hundred seventy-seven thousand, six hundred eighty-one".