28354868855041 has 27 divisors (see below), whose sum is σ = 29572748861187. Its totient is φ = 27186531508080.

The previous prime is 28354868855039. The next prime is 28354868855099. The reversal of 28354868855041 is 14055886845382.

The square root of 28354868855041 is 5324929.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 25372326039025 + 2982542816016 = 5037095^2 + 1727004^2 .

It is not a de Polignac number, because 28354868855041 - 2¹ = 28354868855039 is a prime.

It is a super-2 number, since 2×28354868855041² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28354868859041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 13988587470 + ... + 13988589496.

Almost surely, 2^{28354868855041} is an apocalyptic number.

28354868855041 is the 5324929-th square number.

28354868855041 is the 2662465-th centered octagonal number.

It is an amenable number.

28354868855041 is a deficient number, since it is larger than the sum of its proper divisors (1217880006146).

28354868855041 is an frugal number, since it uses more digits than its factorization.

28354868855041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4270 (or 2135 counting only the distinct ones).

The product of its (nonzero) digits is 294912000, while the sum is 67.

The spelling of 28354868855041 in words is "twenty-eight trillion, three hundred fifty-four billion, eight hundred sixty-eight million, eight hundred fifty-five thousand, forty-one".