405564506553 has 16 divisors (see below), whose sum is σ = 564393505536. Its totient is φ = 258804773760.

The previous prime is 405564506519. The next prime is 405564506569. The reversal of 405564506553 is 355605465504.

It is not a de Polignac number, because 405564506553 - 2¹⁶ = 405564441017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (405564506353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31099825 + ... + 31112862.

It is an arithmetic number, because the mean of its divisors is an integer number (35274594096).

Almost surely, 2^405564506553 is an apocalyptic number.

It is an amenable number.

405564506553 is a deficient number, since it is larger than the sum of its proper divisors (158828998983).

405564506553 is a wasteful number, since it uses less digits than its factorization.

405564506553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62212784.

The product of its (nonzero) digits is 5400000, while the sum is 48.

The spelling of 405564506553 in words is "four hundred five billion, five hundred sixty-four million, five hundred six thousand, five hundred fifty-three".