5128278543 has 48 divisors (see below), whose sum is σ = 7978828000. Its totient is φ = 3164396544.

The previous prime is 5128278521. The next prime is 5128278553. The reversal of 5128278543 is 3458728215.

5128278543 is a `hidden beast` number, since 512 + 82 + 7 + 8 + 54 + 3 = 666.

It is a Cunningham number, because it is equal to 71612²-1.

It is not a de Polignac number, because 5128278543 - 2¹⁰ = 5128277519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5128278553) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1358763 + ... + 1362531.

Almost surely, 2^5128278543 is an apocalyptic number.

5128278543 is a deficient number, since it is larger than the sum of its proper divisors (2850549457).

5128278543 is a wasteful number, since it uses less digits than its factorization.

5128278543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3976 (or 3973 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 5128278543 is about 71611.9999930179. Note that the first 5 decimals coincide. The cubic root of 5128278543 is about 1724.4761882780.

The spelling of 5128278543 in words is "five billion, one hundred twenty-eight million, two hundred seventy-eight thousand, five hundred forty-three".