5011616721 has 32 divisors (see below), whose sum is σ = 6959333376. Its totient is φ = 3205832000.

The previous prime is 5011616713. The next prime is 5011616747. The reversal of 5011616721 is 1276161105.

It is a cyclic number.

It is not a de Polignac number, because 5011616721 - 2³ = 5011616713 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5011616021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1910791 + ... + 1913411.

It is an arithmetic number, because the mean of its divisors is an integer number (217479168).

Almost surely, 2^5011616721 is an apocalyptic number.

It is an amenable number.

5011616721 is a deficient number, since it is larger than the sum of its proper divisors (1947716655).

5011616721 is a wasteful number, since it uses less digits than its factorization.

5011616721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2933.

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 5011616721 is about 70792.7730845459. The cubic root of 5011616721 is about 1711.2992099724.

Adding to 5011616721 its reverse (1276161105), we get a palindrome (6287777826).

The spelling of 5011616721 in words is "five billion, eleven million, six hundred sixteen thousand, seven hundred twenty-one".