28075532505 has 32 divisors (see below), whose sum is σ = 45040195200. Its totient is φ = 14933901312.

The previous prime is 28075532483. The next prime is 28075532539. The reversal of 28075532505 is 50523557082.

It is a happy number.

It is not a de Polignac number, because 28075532505 - 2¹² = 28075528409 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12883506 + ... + 12885684.

It is an arithmetic number, because the mean of its divisors is an integer number (1407506100).

Almost surely, 2^28075532505 is an apocalyptic number.

It is an amenable number.

28075532505 is a deficient number, since it is larger than the sum of its proper divisors (16964662695).

28075532505 is a wasteful number, since it uses less digits than its factorization.

28075532505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4073.

The product of its (nonzero) digits is 420000, while the sum is 42.

The spelling of 28075532505 in words is "twenty-eight billion, seventy-five million, five hundred thirty-two thousand, five hundred five".