5145259878728 has 36 divisors (see below), whose sum is σ = 10182083407065. Its totient is φ = 2437170621696.

The previous prime is 5145259878697. The next prime is 5145259878743. The reversal of 5145259878728 is 8278789525415.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 4624469609764 + 520790268964 = 2150458^2 + 721658^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1603942.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 121878488 + ... + 121920696.

Almost surely, 2^{5145259878728} is an apocalyptic number.

It is an amenable number.

5145259878728 is a deficient number, since it is larger than the sum of its proper divisors (5036823528337).

5145259878728 is an frugal number, since it uses more digits than its factorization.

5145259878728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84462 (or 42230 counting only the distinct ones).

The product of its digits is 451584000, while the sum is 71.

The spelling of 5145259878728 in words is "five trillion, one hundred forty-five billion, two hundred fifty-nine million, eight hundred seventy-eight thousand, seven hundred twenty-eight".