541603366433321 has 4 divisors (see below), whose sum is σ = 541604060836692. Its totient is φ = 541602672029952.

The previous prime is 541603366433291. The next prime is 541603366433357. The reversal of 541603366433321 is 123334663306145.

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 422001496155625 + 119601870277696 = 20542675^2 + 10936264^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-541603366433321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 541603366433321.

It is not an unprimeable number, because it can be changed into a prime (541603366433621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346030436 + ... + 347592101.

It is an arithmetic number, because the mean of its divisors is an integer number (135401015209173).

Almost surely, 2^{541603366433321} is an apocalyptic number.

It is an amenable number.

541603366433321 is a deficient number, since it is larger than the sum of its proper divisors (694403371).

541603366433321 is an equidigital number, since it uses as much as digits as its factorization.

541603366433321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694403370.

The product of its (nonzero) digits is 8398080, while the sum is 50.

The spelling of 541603366433321 in words is "five hundred forty-one trillion, six hundred three billion, three hundred sixty-six million, four hundred thirty-three thousand, three hundred twenty-one".