5605661505 has 16 divisors (see below), whose sum is σ = 9211466304. Its totient is φ = 2908883520.

The previous prime is 5605661497. The next prime is 5605661507. The reversal of 5605661505 is 5051665065.

It is not a de Polignac number, because 5605661505 - 2³ = 5605661497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5605661507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5049591 + ... + 5050700.

It is an arithmetic number, because the mean of its divisors is an integer number (575716644).

Almost surely, 2^5605661505 is an apocalyptic number.

It is an amenable number.

5605661505 is a deficient number, since it is larger than the sum of its proper divisors (3605804799).

5605661505 is a wasteful number, since it uses less digits than its factorization.

5605661505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10100336.

The product of its (nonzero) digits is 135000, while the sum is 39.

The square root of 5605661505 is about 74870.9657009979. The cubic root of 5605661505 is about 1776.4062391838.

The spelling of 5605661505 in words is "five billion, six hundred five million, six hundred sixty-one thousand, five hundred five".