26056563806 has 16 divisors (see below), whose sum is σ = 48104425824. Its totient is φ = 10308091104.

The previous prime is 26056563773. The next prime is 26056563809. The reversal of 26056563806 is 60836565062.

It is a super-2 number, since 2×26056563806² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26056563809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71583785 + ... + 71584148.

It is an arithmetic number, because the mean of its divisors is an integer number (3006526614).

Almost surely, 2^26056563806 is an apocalyptic number.

26056563806 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

26056563806 is a deficient number, since it is larger than the sum of its proper divisors (22047862018).

26056563806 is a wasteful number, since it uses less digits than its factorization.

26056563806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143167955.

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 26056563806 in words is "twenty-six billion, fifty-six million, five hundred sixty-three thousand, eight hundred six".