5187981065796 has 243 divisors, whose sum is σ = 13803867411607. Its totient is φ = 1642869553920.

The previous prime is 5187981065731. The next prime is 5187981065879. The reversal of 5187981065796 is 6975601897815.

The square root of 5187981065796 is 2277714.

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

5187981065796 is a `hidden beast` number, since 518 + 7 + 9 + 8 + 10 + 6 + 5 + 7 + 96 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 32066064900 + 5155915000896 = 179070^2 + 2270664^2 .

It is a super-2 number, since 2×5187981065796² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 26334929170 + ... + 26334929366.

Almost surely, 2^{5187981065796} is an apocalyptic number.

5187981065796 is the 2277714-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5187981065796

5187981065796 is an abundant number, since it is smaller than the sum of its proper divisors (8615886345811).

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

5187981065796 is a wasteful number, since it uses less digits than its factorization.

5187981065796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 228614400, while the sum is 72.

The spelling of 5187981065796 in words is "five trillion, one hundred eighty-seven billion, nine hundred eighty-one million, sixty-five thousand, seven hundred ninety-six".