26803256089 has 9 divisors (see below), whose sum is σ = 27327366493. Its totient is φ = 26289020992.

The previous prime is 26803256059. The next prime is 26803256113. The reversal of 26803256089 is 98065230862.

The square root of 26803256089 is 163717.

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

It can be written as a sum of positive squares in 4 ways, for example, as 11795046025 + 15008210064 = 108605^2 + 122508^2 .

It is not a de Polignac number, because 26803256089 - 2¹¹ = 26803254041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26803256009) 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 8 ways as a sum of consecutive naturals, for example, 8675457 + ... + 8678545.

Almost surely, 2^26803256089 is an apocalyptic number.

26803256089 is the 163717-th square number.

26803256089 is the 81859-th centered octagonal number.

It is an amenable number.

26803256089 is a deficient number, since it is larger than the sum of its proper divisors (524110404).

26803256089 is an frugal number, since it uses more digits than its factorization.

26803256089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6284 (or 3142 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

Multiplying 26803256089 by its sum of digits (49), we get a square (1313359548361 = 1146019²).

The spelling of 26803256089 in words is "twenty-six billion, eight hundred three million, two hundred fifty-six thousand, eighty-nine".