26565056562 has 144 divisors (see below), whose sum is σ = 62748731808. Its totient is φ = 7465920000.

The previous prime is 26565056519. The next prime is 26565056627.

26565056562 is nontrivially palindromic in base 10.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 125900637 + ... + 125900847.

It is an arithmetic number, because the mean of its divisors is an integer number (435755082).

Almost surely, 2^26565056562 is an apocalyptic number.

26565056562 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 26565056562, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31374365904).

26565056562 is an abundant number, since it is smaller than the sum of its proper divisors (36183675246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26565056562 is a wasteful number, since it uses less digits than its factorization.

26565056562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 48.

Subtracting from 26565056562 its product of nonzero digits (3240000), we obtain a palindrome (26561816562).

The spelling of 26565056562 in words is "twenty-six billion, five hundred sixty-five million, fifty-six thousand, five hundred sixty-two".