26518368039161 has 8 divisors (see below), whose sum is σ = 27473315658120. Its totient is φ = 25566121829248.

The previous prime is 26518368039157. The next prime is 26518368039199. The reversal of 26518368039161 is 16193086381562.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10812555180025 + 15705812859136 = 3288245^2 + 3963056^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26518368039161 - 2² = 26518368039157 is a prime.

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 26518368039161.

It is not an unprimeable number, because it can be changed into a prime (26518368039131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 675332276 + ... + 675371541.

It is an arithmetic number, because the mean of its divisors is an integer number (3434164457265).

Almost surely, 2^{26518368039161} is an apocalyptic number.

It is an amenable number.

26518368039161 is a deficient number, since it is larger than the sum of its proper divisors (954947618959).

26518368039161 is a wasteful number, since it uses less digits than its factorization.

26518368039161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350704523.

The product of its (nonzero) digits is 11197440, while the sum is 59.

The spelling of 26518368039161 in words is "twenty-six trillion, five hundred eighteen billion, three hundred sixty-eight million, thirty-nine thousand, one hundred sixty-one".