1021433502449 has 4 divisors (see below), whose sum is σ = 1049039813364. Its totient is φ = 993827191536.

The previous prime is 1021433502359. The next prime is 1021433502487. The reversal of 1021433502449 is 9442053341201.

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 855637950049 + 165795552400 = 925007^2 + 407180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021433502449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021433502949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13803155402 + ... + 13803155475.

It is an arithmetic number, because the mean of its divisors is an integer number (262259953341).

Almost surely, 2^{1021433502449} is an apocalyptic number.

It is an amenable number.

1021433502449 is a deficient number, since it is larger than the sum of its proper divisors (27606310915).

1021433502449 is an equidigital number, since it uses as much as digits as its factorization.

1021433502449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27606310914.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 1021433502449 in words is "one trillion, twenty-one billion, four hundred thirty-three million, five hundred two thousand, four hundred forty-nine".