545344240121 has 4 divisors (see below), whose sum is σ = 547120606032. Its totient is φ = 543567874212.

The previous prime is 545344240097. The next prime is 545344240153. The reversal of 545344240121 is 121042443545.

It is a happy number.

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 545344240121 - 2¹⁴ = 545344223737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545344240621) 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, 888182495 + ... + 888183108.

It is an arithmetic number, because the mean of its divisors is an integer number (136780151508).

Almost surely, 2^545344240121 is an apocalyptic number.

It is an amenable number.

545344240121 is a deficient number, since it is larger than the sum of its proper divisors (1776365911).

545344240121 is a wasteful number, since it uses less digits than its factorization.

545344240121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776365910.

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 545344240121 its reverse (121042443545), we get a palindrome (666386683666).

The spelling of 545344240121 in words is "five hundred forty-five billion, three hundred forty-four million, two hundred forty thousand, one hundred twenty-one".