545242540421 has 24 divisors (see below), whose sum is σ = 580666775040. Its totient is φ = 511874019072.

The previous prime is 545242540417. The next prime is 545242540429. The reversal of 545242540421 is 124045242545.

It is not a de Polignac number, because 545242540421 - 2² = 545242540417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545242540429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 309972140 + ... + 309973898.

It is an arithmetic number, because the mean of its divisors is an integer number (24194448960).

Almost surely, 2^545242540421 is an apocalyptic number.

It is an amenable number.

545242540421 is a deficient number, since it is larger than the sum of its proper divisors (35424234619).

545242540421 is a wasteful number, since it uses less digits than its factorization.

545242540421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3893 (or 3876 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 38.

Adding to 545242540421 its reverse (124045242545), we get a palindrome (669287782966).

The spelling of 545242540421 in words is "five hundred forty-five billion, two hundred forty-two million, five hundred forty thousand, four hundred twenty-one".