26650216645001 has 4 divisors (see below), whose sum is σ = 26886059270292. Its totient is φ = 26414374019712.

The previous prime is 26650216644973. The next prime is 26650216645007. The reversal of 26650216645001 is 10054661205662.

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 5114110873600 + 21536105771401 = 2261440^2 + 4640701^2 .

It is a cyclic number.

It is not a de Polignac number, because 26650216645001 - 2¹⁰ = 26650216643977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26650216645007) 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, 117921312476 + ... + 117921312701.

It is an arithmetic number, because the mean of its divisors is an integer number (6721514817573).

Almost surely, 2^{26650216645001} is an apocalyptic number.

It is an amenable number.

26650216645001 is a deficient number, since it is larger than the sum of its proper divisors (235842625291).

26650216645001 is a wasteful number, since it uses less digits than its factorization.

26650216645001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235842625290.

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 26650216645001 in words is "twenty-six trillion, six hundred fifty billion, two hundred sixteen million, six hundred forty-five thousand, one".