4521321416605 has 48 divisors (see below), whose sum is σ = 6517479269376. Its totient is φ = 2999177072640.

The previous prime is 4521321416569. The next prime is 4521321416629. The reversal of 4521321416605 is 5066141231254.

It is not a de Polignac number, because 4521321416605 - 2¹¹ = 4521321414557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19991517 + ... + 20216413.

It is an arithmetic number, because the mean of its divisors is an integer number (135780818112).

Almost surely, 2^{4521321416605} is an apocalyptic number.

It is an amenable number.

4521321416605 is a deficient number, since it is larger than the sum of its proper divisors (1996157852771).

4521321416605 is a wasteful number, since it uses less digits than its factorization.

4521321416605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227594 (or 227587 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

Adding to 4521321416605 its reverse (5066141231254), we get a palindrome (9587462647859).

The spelling of 4521321416605 in words is "four trillion, five hundred twenty-one billion, three hundred twenty-one million, four hundred sixteen thousand, six hundred five".