5129216568 has 256 divisors, whose sum is σ = 17215488000. Its totient is φ = 1383288192.

The previous prime is 5129216551. The next prime is 5129216627. The reversal of 5129216568 is 8656129215.

5129216568 is a `hidden beast` number, since 51 + 29 + 2 + 16 + 568 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2746371 + ... + 2748237.

It is an arithmetic number, because the mean of its divisors is an integer number (67248000).

Almost surely, 2^5129216568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5129216568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8607744000).

5129216568 is an abundant number, since it is smaller than the sum of its proper divisors (12086271432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5129216568 is a wasteful number, since it uses less digits than its factorization.

5129216568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991 (or 1981 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 5129216568 is about 71618.5490498097. The cubic root of 5129216568 is about 1724.5813244783.

The spelling of 5129216568 in words is "five billion, one hundred twenty-nine million, two hundred sixteen thousand, five hundred sixty-eight".