545554234021 has 4 divisors (see below), whose sum is σ = 553238096544. Its totient is φ = 537870371500.

The previous prime is 545554233977. The next prime is 545554234051. The reversal of 545554234021 is 120432455545.

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 545554234021 - 2²⁹ = 545017363109 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 (545554234051) 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, 3841931155 + ... + 3841931296.

It is an arithmetic number, because the mean of its divisors is an integer number (138309524136).

Almost surely, 2^545554234021 is an apocalyptic number.

It is an amenable number.

545554234021 is a deficient number, since it is larger than the sum of its proper divisors (7683862523).

545554234021 is an equidigital number, since it uses as much as digits as its factorization.

545554234021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7683862522.

The product of its (nonzero) digits is 480000, while the sum is 40.

Adding to 545554234021 its reverse (120432455545), we get a palindrome (665986689566).

The spelling of 545554234021 in words is "five hundred forty-five billion, five hundred fifty-four million, two hundred thirty-four thousand, twenty-one".