5120815978084 has 27 divisors (see below), whose sum is σ = 8988828166227. Its totient is φ = 2552603171064.

The previous prime is 5120815978081. The next prime is 5120815978097. The reversal of 5120815978084 is 4808795180215.

The square root of 5120815978084 is 2262922.

It is a perfect power (a square), and thus also a powerful number.

It is a super-3 number, since 3×5120815978084³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5120815978081) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1660983207 + ... + 1660986289.

Almost surely, 2^{5120815978084} is an apocalyptic number.

5120815978084 is the 2262922-nd square number.

It is an amenable number.

5120815978084 is a deficient number, since it is larger than the sum of its proper divisors (3868012188143).

5120815978084 is an frugal number, since it uses more digits than its factorization.

5120815978084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6904 (or 3452 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 58.

The spelling of 5120815978084 in words is "five trillion, one hundred twenty billion, eight hundred fifteen million, nine hundred seventy-eight thousand, eighty-four".