5168286721 has 8 divisors (see below), whose sum is σ = 5566760640. Its totient is φ = 4769943312.

The previous prime is 5168286719. The next prime is 5168286727. The reversal of 5168286721 is 1276828615.

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

It is a cyclic number.

It is not a de Polignac number, because 5168286721 - 2¹ = 5168286719 is a prime.

It is a super-2 number, since 2×5168286721² = 53422375260929863682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5168286727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59220 + ... + 117658.

It is an arithmetic number, because the mean of its divisors is an integer number (695845080).

Almost surely, 2^5168286721 is an apocalyptic number.

It is an amenable number.

5168286721 is a deficient number, since it is larger than the sum of its proper divisors (398473919).

5168286721 is a wasteful number, since it uses less digits than its factorization.

5168286721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65255.

The product of its digits is 322560, while the sum is 46.

The square root of 5168286721 is about 71890.7971926866. The cubic root of 5168286721 is about 1728.9490672386.

The spelling of 5168286721 in words is "five billion, one hundred sixty-eight million, two hundred eighty-six thousand, seven hundred twenty-one".