1550411242321 has 4 divisors (see below), whose sum is σ = 1641611903652. Its totient is φ = 1459210580992.

The previous prime is 1550411242307. The next prime is 1550411242333. The reversal of 1550411242321 is 1232421140551.

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 1305445638721 + 244965603600 = 1142561^2 + 494940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1550411242321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1550411242021) 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, 45600330640 + ... + 45600330673.

It is an arithmetic number, because the mean of its divisors is an integer number (410402975913).

Almost surely, 2^{1550411242321} is an apocalyptic number.

It is an amenable number.

1550411242321 is a deficient number, since it is larger than the sum of its proper divisors (91200661331).

1550411242321 is an equidigital number, since it uses as much as digits as its factorization.

1550411242321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91200661330.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 1550411242321 its reverse (1232421140551), we get a palindrome (2782832382872).

The spelling of 1550411242321 in words is "one trillion, five hundred fifty billion, four hundred eleven million, two hundred forty-two thousand, three hundred twenty-one".