5476216661 has 4 divisors (see below), whose sum is σ = 5479279500. Its totient is φ = 5473153824.

The previous prime is 5476216643. The next prime is 5476216693. The reversal of 5476216661 is 1666126745.

5476216661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1666126745 = 5 ⋅333225349.

It can be written as a sum of positive squares in 2 ways, for example, as 3614294161 + 1861922500 = 60119^2 + 43150^2 .

It is a cyclic number.

It is not a de Polignac number, because 5476216661 - 2⁶ = 5476216597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5476216601) 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 3 ways as a sum of consecutive naturals, for example, 1528736 + ... + 1532313.

It is an arithmetic number, because the mean of its divisors is an integer number (1369819875).

Almost surely, 2^5476216661 is an apocalyptic number.

It is an amenable number.

5476216661 is a deficient number, since it is larger than the sum of its proper divisors (3062839).

5476216661 is a wasteful number, since it uses less digits than its factorization.

5476216661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3062838.

The product of its digits is 362880, while the sum is 44.

The square root of 5476216661 is about 74001.4639111957. The cubic root of 5476216661 is about 1762.6261437539.

The spelling of 5476216661 in words is "five billion, four hundred seventy-six million, two hundred sixteen thousand, six hundred sixty-one".