4661215665 has 8 divisors (see below), whose sum is σ = 7457945088. Its totient is φ = 2485981680.

The previous prime is 4661215651. The next prime is 4661215693. The reversal of 4661215665 is 5665121664.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4661215665 - 2¹⁰ = 4661214641 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155373841 + ... + 155373870.

It is an arithmetic number, because the mean of its divisors is an integer number (932243136).

Almost surely, 2^4661215665 is an apocalyptic number.

It is an amenable number.

4661215665 is a deficient number, since it is larger than the sum of its proper divisors (2796729423).

4661215665 is a wasteful number, since it uses less digits than its factorization.

4661215665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310747719.

The product of its digits is 259200, while the sum is 42.

The square root of 4661215665 is about 68273.0962019447. The cubic root of 4661215665 is about 1670.4484035009.

The spelling of 4661215665 in words is "four billion, six hundred sixty-one million, two hundred fifteen thousand, six hundred sixty-five".