28550567201 has 4 divisors (see below), whose sum is σ = 30746764692. Its totient is φ = 26354369712.

The previous prime is 28550567179. The next prime is 28550567233. The reversal of 28550567201 is 10276505582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13842699025 + 14707868176 = 117655^2 + 121276^2 .

It is a cyclic number.

It is not a de Polignac number, because 28550567201 - 2¹⁴ = 28550550817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28540567201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1098098726 + ... + 1098098751.

It is an arithmetic number, because the mean of its divisors is an integer number (7686691173).

Almost surely, 2^28550567201 is an apocalyptic number.

It is an amenable number.

28550567201 is a deficient number, since it is larger than the sum of its proper divisors (2196197491).

28550567201 is a wasteful number, since it uses less digits than its factorization.

28550567201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2196197490.

The product of its (nonzero) digits is 168000, while the sum is 41.

The spelling of 28550567201 in words is "twenty-eight billion, five hundred fifty million, five hundred sixty-seven thousand, two hundred one".