541603335220421 has 4 divisors (see below), whose sum is σ = 559074410550144. Its totient is φ = 524132259890700.

The previous prime is 541603335220319. The next prime is 541603335220429. The reversal of 541603335220421 is 124022533306145.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 541603335220421 - 2¹⁴ = 541603335204037 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 (541603335220429) 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, 8735537664815 + ... + 8735537664876.

It is an arithmetic number, because the mean of its divisors is an integer number (139768602637536).

Almost surely, 2^{541603335220421} is an apocalyptic number.

It is an amenable number.

541603335220421 is a deficient number, since it is larger than the sum of its proper divisors (17471075329723).

541603335220421 is a wasteful number, since it uses less digits than its factorization.

541603335220421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17471075329722.

The product of its (nonzero) digits is 518400, while the sum is 41.

Adding to 541603335220421 its reverse (124022533306145), we get a palindrome (665625868526566).

The spelling of 541603335220421 in words is "five hundred forty-one trillion, six hundred three billion, three hundred thirty-five million, two hundred twenty thousand, four hundred twenty-one".