1283407230661 has 4 divisors (see below), whose sum is σ = 1283416313292. Its totient is φ = 1283398148032.

The previous prime is 1283407230647. The next prime is 1283407230673. The reversal of 1283407230661 is 1660327043821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1040565246561 + 242841984100 = 1020081^2 + 492790^2 .

It is a cyclic number.

It is not a de Polignac number, because 1283407230661 - 2²⁵ = 1283373676229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1283407230461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4325956 + ... + 4613101.

It is an arithmetic number, because the mean of its divisors is an integer number (320854078323).

Almost surely, 2^{1283407230661} is an apocalyptic number.

It is an amenable number.

1283407230661 is a deficient number, since it is larger than the sum of its proper divisors (9082631).

1283407230661 is an equidigital number, since it uses as much as digits as its factorization.

1283407230661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9082630.

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 1283407230661 in words is "one trillion, two hundred eighty-three billion, four hundred seven million, two hundred thirty thousand, six hundred sixty-one".