28062516505 has 16 divisors (see below), whose sum is σ = 35808958224. Its totient is φ = 21038725120.

The previous prime is 28062516401. The next prime is 28062516511. The reversal of 28062516505 is 50561526082.

It can be written as a sum of positive squares in 8 ways, for example, as 2235776656 + 25826739849 = 47284^2 + 160707^2 .

It is not a de Polignac number, because 28062516505 - 2¹¹ = 28062514457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 688666 + ... + 728275.

It is an arithmetic number, because the mean of its divisors is an integer number (2238059889).

Almost surely, 2^28062516505 is an apocalyptic number.

It is an amenable number.

28062516505 is a deficient number, since it is larger than the sum of its proper divisors (7746441719).

28062516505 is a wasteful number, since it uses less digits than its factorization.

28062516505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417196.

The product of its (nonzero) digits is 144000, while the sum is 40.

The spelling of 28062516505 in words is "twenty-eight billion, sixty-two million, five hundred sixteen thousand, five hundred five".