545403322121 has 16 divisors (see below), whose sum is σ = 623906352384. Its totient is φ = 467047586304.

The previous prime is 545403322109. The next prime is 545403322151. The reversal of 545403322121 is 121223304545.

It is a cyclic number.

It is not a de Polignac number, because 545403322121 - 2¹⁸ = 545403059977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (545403322151) 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 15 ways as a sum of consecutive naturals, for example, 38709740 + ... + 38723826.

It is an arithmetic number, because the mean of its divisors is an integer number (38994147024).

Almost surely, 2^545403322121 is an apocalyptic number.

It is an amenable number.

545403322121 is a deficient number, since it is larger than the sum of its proper divisors (78503030263).

545403322121 is a wasteful number, since it uses less digits than its factorization.

545403322121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18920.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 545403322121 its reverse (121223304545), we get a palindrome (666626626666).

The spelling of 545403322121 in words is "five hundred forty-five billion, four hundred three million, three hundred twenty-two thousand, one hundred twenty-one".