5661056505 has 64 divisors (see below), whose sum is σ = 10256843520. Its totient is φ = 2646604800.

The previous prime is 5661056503. The next prime is 5661056519. The reversal of 5661056505 is 5056501665.

It is not a de Polignac number, because 5661056505 - 2¹ = 5661056503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (5661056503) 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, 336750 + ... + 353160.

It is an arithmetic number, because the mean of its divisors is an integer number (160263180).

Almost surely, 2^5661056505 is an apocalyptic number.

It is an amenable number.

5661056505 is a deficient number, since it is larger than the sum of its proper divisors (4595787015).

5661056505 is a wasteful number, since it uses less digits than its factorization.

5661056505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16522.

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

The square root of 5661056505 is about 75239.9927232851. The cubic root of 5661056505 is about 1782.2385362543.

The spelling of 5661056505 in words is "five billion, six hundred sixty-one million, fifty-six thousand, five hundred five".