4541305450021 has 4 divisors (see below), whose sum is σ = 4551156438444. Its totient is φ = 4531454461600.

The previous prime is 4541305449973. The next prime is 4541305450043. The reversal of 4541305450021 is 1200545031454.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2133498422500 + 2407807027521 = 1460650^2 + 1551711^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4541305450021 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 (4541305450621) 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, 4925493520 + ... + 4925494441.

It is an arithmetic number, because the mean of its divisors is an integer number (1137789109611).

Almost surely, 2^{4541305450021} is an apocalyptic number.

It is an amenable number.

4541305450021 is a deficient number, since it is larger than the sum of its proper divisors (9850988423).

4541305450021 is an equidigital number, since it uses as much as digits as its factorization.

4541305450021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9850988422.

The product of its (nonzero) digits is 48000, while the sum is 34.

The spelling of 4541305450021 in words is "four trillion, five hundred forty-one billion, three hundred five million, four hundred fifty thousand, twenty-one".