26868362605405 has 16 divisors (see below), whose sum is σ = 34971274833264. Its totient is φ = 19736874680320.

The previous prime is 26868362605373. The next prime is 26868362605421. The reversal of 26868362605405 is 50450626386862.

It can be written as a sum of positive squares in 8 ways, for example, as 329101858276 + 26539260747129 = 573674^2 + 5151627^2 .

It is not a de Polignac number, because 26868362605405 - 2⁵ = 26868362605373 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 15 ways as a sum of consecutive naturals, for example, 3854854852 + ... + 3854861821.

It is an arithmetic number, because the mean of its divisors is an integer number (2185704677079).

Almost surely, 2^{26868362605405} is an apocalyptic number.

It is an amenable number.

26868362605405 is a deficient number, since it is larger than the sum of its proper divisors (8102912227859).

26868362605405 is a wasteful number, since it uses less digits than its factorization.

26868362605405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7709716736.

The product of its (nonzero) digits is 99532800, while the sum is 61.

The spelling of 26868362605405 in words is "twenty-six trillion, eight hundred sixty-eight billion, three hundred sixty-two million, six hundred five thousand, four hundred five".