416659504561 has 4 divisors (see below), whose sum is σ = 418447743012. Its totient is φ = 414871266112.

The previous prime is 416659504519. The next prime is 416659504607. The reversal of 416659504561 is 165405956614.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 165405956614 = 2 ⋅82702978307.

It can be written as a sum of positive squares in 2 ways, for example, as 117484417600 + 299175086961 = 342760^2 + 546969^2 .

It is a cyclic number.

It is not a de Polignac number, because 416659504561 - 2¹¹ = 416659502513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 416659504499 and 416659504508.

It is not an unprimeable number, because it can be changed into a prime (416659504501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 894118876 + ... + 894119341.

It is an arithmetic number, because the mean of its divisors is an integer number (104611935753).

Almost surely, 2^416659504561 is an apocalyptic number.

It is an amenable number.

416659504561 is a deficient number, since it is larger than the sum of its proper divisors (1788238451).

416659504561 is a wasteful number, since it uses less digits than its factorization.

416659504561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1788238450.

The product of its (nonzero) digits is 3888000, while the sum is 52.

The spelling of 416659504561 in words is "four hundred sixteen billion, six hundred fifty-nine million, five hundred four thousand, five hundred sixty-one".