4405121113545 has 64 divisors (see below), whose sum is σ = 8292421889280. Its totient is φ = 2211083596800.

The previous prime is 4405121113543. The next prime is 4405121113607. The reversal of 4405121113545 is 5453111215044.

4405121113545 is a `hidden beast` number, since 4 + 4 + 0 + 512 + 1 + 1 + 135 + 4 + 5 = 666.

It is not a de Polignac number, because 4405121113545 - 2¹ = 4405121113543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4405121113543) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 60232450 + ... + 60305540.

It is an arithmetic number, because the mean of its divisors is an integer number (129569092020).

Almost surely, 2^{4405121113545} is an apocalyptic number.

4405121113545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4405121113545 is a deficient number, since it is larger than the sum of its proper divisors (3887300775735).

4405121113545 is a wasteful number, since it uses less digits than its factorization.

4405121113545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99383 (or 99377 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

Adding to 4405121113545 its reverse (5453111215044), we get a palindrome (9858232328589).

The spelling of 4405121113545 in words is "four trillion, four hundred five billion, one hundred twenty-one million, one hundred thirteen thousand, five hundred forty-five".