28341777565 has 8 divisors (see below), whose sum is σ = 34018234848. Its totient is φ = 22668020880.

The previous prime is 28341777509. The next prime is 28341777599. The reversal of 28341777565 is 56577714382.

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

It is not a de Polignac number, because 28341777565 - 2⁷ = 28341777437 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 651987 + ... + 694096.

It is an arithmetic number, because the mean of its divisors is an integer number (4252279356).

Almost surely, 2^28341777565 is an apocalyptic number.

It is an amenable number.

28341777565 is a deficient number, since it is larger than the sum of its proper divisors (5676457283).

28341777565 is a wasteful number, since it uses less digits than its factorization.

28341777565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350299.

The product of its digits is 9878400, while the sum is 55.

The spelling of 28341777565 in words is "twenty-eight billion, three hundred forty-one million, seven hundred seventy-seven thousand, five hundred sixty-five".