1405453220545 has 16 divisors (see below), whose sum is σ = 1839937861440. Its totient is φ = 1022107892800.

The previous prime is 1405453220477. The next prime is 1405453220573. The reversal of 1405453220545 is 5450223545041.

It is not a de Polignac number, because 1405453220545 - 2¹⁹ = 1405452696257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1405453220498 and 1405453220507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 961350 + ... + 1932640.

It is an arithmetic number, because the mean of its divisors is an integer number (114996116340).

Almost surely, 2^{1405453220545} is an apocalyptic number.

It is an amenable number.

1405453220545 is a deficient number, since it is larger than the sum of its proper divisors (434484640895).

1405453220545 is a wasteful number, since it uses less digits than its factorization.

1405453220545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997616.

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

Adding to 1405453220545 its reverse (5450223545041), we get a palindrome (6855676765586).

The spelling of 1405453220545 in words is "one trillion, four hundred five billion, four hundred fifty-three million, two hundred twenty thousand, five hundred forty-five".