5128717980 has 24 divisors (see below), whose sum is σ = 14360410512. Its totient is φ = 1367658112.

The previous prime is 5128717967. The next prime is 5128717987. The reversal of 5128717980 is 897178215.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5128717987) 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, 42739257 + ... + 42739376.

It is an arithmetic number, because the mean of its divisors is an integer number (598350438).

Almost surely, 2^5128717980 is an apocalyptic number.

It is an amenable number.

5128717980 is an abundant number, since it is smaller than the sum of its proper divisors (9231692532).

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

5128717980 is a wasteful number, since it uses less digits than its factorization.

5128717980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85478645 (or 85478643 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 48.

The square root of 5128717980 is about 71615.0681072077. The cubic root of 5128717980 is about 1724.5254430778.

The spelling of 5128717980 in words is "five billion, one hundred twenty-eight million, seven hundred seventeen thousand, nine hundred eighty".