4661215261 has 16 divisors (see below), whose sum is σ = 5198117760. Its totient is φ = 4153766400.

The previous prime is 4661215243. The next prime is 4661215289. The reversal of 4661215261 is 1625121664.

It is not a de Polignac number, because 4661215261 - 2⁷ = 4661215133 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 (4661215241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 821145 + ... + 826801.

It is an arithmetic number, because the mean of its divisors is an integer number (324882360).

Almost surely, 2^4661215261 is an apocalyptic number.

It is an amenable number.

4661215261 is a deficient number, since it is larger than the sum of its proper divisors (536902499).

4661215261 is a wasteful number, since it uses less digits than its factorization.

4661215261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8244.

The product of its digits is 17280, while the sum is 34.

The square root of 4661215261 is about 68273.0932432390. The cubic root of 4661215261 is about 1670.4483552401.

The spelling of 4661215261 in words is "four billion, six hundred sixty-one million, two hundred fifteen thousand, two hundred sixty-one".