28551750905 has 8 divisors (see below), whose sum is σ = 34424481984. Its totient is φ = 22733146800.

The previous prime is 28551750853. The next prime is 28551750911. The reversal of 28551750905 is 50905715582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28551750905 - 2⁶ = 28551750841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28551750905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13530581 + ... + 13532690.

It is an arithmetic number, because the mean of its divisors is an integer number (4303060248).

Almost surely, 2^28551750905 is an apocalyptic number.

It is an amenable number.

28551750905 is a deficient number, since it is larger than the sum of its proper divisors (5872731079).

28551750905 is a wasteful number, since it uses less digits than its factorization.

28551750905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27063487.

The product of its (nonzero) digits is 630000, while the sum is 47.

The spelling of 28551750905 in words is "twenty-eight billion, five hundred fifty-one million, seven hundred fifty thousand, nine hundred five".