28053580505 has 8 divisors (see below), whose sum is σ = 34825134600. Its totient is φ = 21668972416.

The previous prime is 28053580501. The next prime is 28053580537. The reversal of 28053580505 is 50508535082.

It can be written as a sum of positive squares in 4 ways, for example, as 5451164224 + 22602416281 = 73832^2 + 150341^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 28053580505 - 2² = 28053580501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28053580501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96736340 + ... + 96736629.

It is an arithmetic number, because the mean of its divisors is an integer number (4353141825).

Almost surely, 2^28053580505 is an apocalyptic number.

It is an amenable number.

28053580505 is a deficient number, since it is larger than the sum of its proper divisors (6771554095).

28053580505 is a wasteful number, since it uses less digits than its factorization.

28053580505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193473003.

The product of its (nonzero) digits is 240000, while the sum is 41.

The spelling of 28053580505 in words is "twenty-eight billion, fifty-three million, five hundred eighty thousand, five hundred five".