26556263264065 has 8 divisors (see below), whose sum is σ = 31867705614888. Its totient is φ = 21244884145920.

The previous prime is 26556263264033. The next prime is 26556263264071. The reversal of 26556263264065 is 56046236265562.

It can be written as a sum of positive squares in 4 ways, for example, as 364724197776 + 26191539066289 = 603924^2 + 5117767^2 .

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

It is not a de Polignac number, because 26556263264065 - 2⁵ = 26556263264033 is a prime.

It is a Duffinian 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, 14879256 + ... + 16568185.

It is an arithmetic number, because the mean of its divisors is an integer number (3983463201861).

Almost surely, 2^{26556263264065} is an apocalyptic number.

It is an amenable number.

26556263264065 is a deficient number, since it is larger than the sum of its proper divisors (5311442350823).

26556263264065 is a wasteful number, since it uses less digits than its factorization.

26556263264065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31616339.

The product of its (nonzero) digits is 93312000, while the sum is 58.

The spelling of 26556263264065 in words is "twenty-six trillion, five hundred fifty-six billion, two hundred sixty-three million, two hundred sixty-four thousand, sixty-five".