26895016009 has 3 divisors (see below), whose sum is σ = 26895180007. Its totient is φ = 26894852012.

The previous prime is 26895016007. The next prime is 26895016013. The reversal of 26895016009 is 90061059862.

The square root of 26895016009 is 163997.

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.

It can be written as a sum of positive squares in only one way, i.e., 3494583225 + 23400432784 = 59115^2 + 152972^2 .

It is not a de Polignac number, because 26895016009 - 2¹ = 26895016007 is a prime.

It is a super-2 number, since 2×26895016009² (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 26895016009.

It is not an unprimeable number, because it can be changed into a prime (26895016007) 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, 81999 + ... + 245995.

Almost surely, 2^26895016009 is an apocalyptic number.

26895016009 is the 163997-th square number.

26895016009 is the 81999-th centered octagonal number.

It is an amenable number.

26895016009 is a deficient number, since it is larger than the sum of its proper divisors (163998).

26895016009 is an frugal number, since it uses more digits than its factorization.

26895016009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327994 (or 163997 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 46.

The spelling of 26895016009 in words is "twenty-six billion, eight hundred ninety-five million, sixteen thousand, nine".