4661221611 has 4 divisors (see below), whose sum is σ = 6214962152. Its totient is φ = 3107481072.

The previous prime is 4661221603. The next prime is 4661221657. The reversal of 4661221611 is 1161221664.

4661221611 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.

It is not a de Polignac number, because 4661221611 - 2³ = 4661221603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4661221681) 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, 776870266 + ... + 776870271.

It is an arithmetic number, because the mean of its divisors is an integer number (1553740538).

Almost surely, 2^4661221611 is an apocalyptic number.

4661221611 is a deficient number, since it is larger than the sum of its proper divisors (1553740541).

4661221611 is a wasteful number, since it uses less digits than its factorization.

4661221611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553740540.

The product of its digits is 3456, while the sum is 30.

The square root of 4661221611 is about 68273.1397476343. The cubic root of 4661221611 is about 1670.4491137935.

The spelling of 4661221611 in words is "four billion, six hundred sixty-one million, two hundred twenty-one thousand, six hundred eleven".