26320310605 has 8 divisors (see below), whose sum is σ = 33442277112. Its totient is φ = 19817645568.

The previous prime is 26320310461. The next prime is 26320310629. The reversal of 26320310605 is 50601302362.

It can be written as a sum of positive squares in 4 ways, for example, as 439866729 + 25880443876 = 20973^2 + 160874^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26320310605 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154825272 + ... + 154825441.

It is an arithmetic number, because the mean of its divisors is an integer number (4180284639).

Almost surely, 2^26320310605 is an apocalyptic number.

It is an amenable number.

26320310605 is a deficient number, since it is larger than the sum of its proper divisors (7121966507).

26320310605 is a wasteful number, since it uses less digits than its factorization.

26320310605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309650735.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 26320310605 its reverse (50601302362), we get a palindrome (76921612967).

The spelling of 26320310605 in words is "twenty-six billion, three hundred twenty million, three hundred ten thousand, six hundred five".