4661215649 has 4 divisors (see below), whose sum is σ = 4661382336. Its totient is φ = 4661048964.

The previous prime is 4661215619. The next prime is 4661215651. The reversal of 4661215649 is 9465121664.

4661215649 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4661215649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4661215619) 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 3 ways as a sum of consecutive naturals, for example, 30029 + ... + 101114.

It is an arithmetic number, because the mean of its divisors is an integer number (1165345584).

Almost surely, 2^4661215649 is an apocalyptic number.

It is an amenable number.

4661215649 is a deficient number, since it is larger than the sum of its proper divisors (166687).

4661215649 is a wasteful number, since it uses less digits than its factorization.

4661215649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166686.

The product of its digits is 311040, while the sum is 44.

The square root of 4661215649 is about 68273.0960847683. The cubic root of 4661215649 is about 1670.4484015895.

The spelling of 4661215649 in words is "four billion, six hundred sixty-one million, two hundred fifteen thousand, six hundred forty-nine".