26589541969 has 3 divisors (see below), whose sum is σ = 26589705033. Its totient is φ = 26589378906.

The previous prime is 26589541949. The next prime is 26589541981. The reversal of 26589541969 is 96914598562.

The square root of 26589541969 is 163063.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 96914598562 = 2 ⋅48457299281.

It is not a de Polignac number, because 26589541969 - 2⁹ = 26589541457 is a prime.

It is a super-2 number, since 2×26589541969² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26589541969.

It is not an unprimeable number, because it can be changed into a prime (26589541949) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 81532 + ... + 244594.

It is an arithmetic number, because the mean of its divisors is an integer number (8863235011).

Almost surely, 2^26589541969 is an apocalyptic number.

26589541969 is the 163063-rd square number.

26589541969 is the 81532-nd centered octagonal number.

It is an amenable number.

26589541969 is a deficient number, since it is larger than the sum of its proper divisors (163064).

26589541969 is an frugal number, since it uses more digits than its factorization.

26589541969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326126 (or 163063 counting only the distinct ones).

The product of its digits is 41990400, while the sum is 64.

Multiplying 26589541969 by its sum of digits (64), we get a square (1701730686016 = 1304504²).

The spelling of 26589541969 in words is "twenty-six billion, five hundred eighty-nine million, five hundred forty-one thousand, nine hundred sixty-nine".