26561266216562 has 16 divisors (see below), whose sum is σ = 49673017340352. Its totient is φ = 10348545279120.

The previous prime is 26561266216531. The next prime is 26561266216631.

26561266216562 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 26561266216498 and 26561266216507.

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, 86237877173 + ... + 86237877480.

It is an arithmetic number, because the mean of its divisors is an integer number (3104563583772).

Almost surely, 2^{26561266216562} is an apocalyptic number.

26561266216562 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

26561266216562 is a deficient number, since it is larger than the sum of its proper divisors (23111751123790).

26561266216562 is a wasteful number, since it uses less digits than its factorization.

26561266216562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172475754673.

The product of its digits is 18662400, while the sum is 56.

The spelling of 26561266216562 in words is "twenty-six trillion, five hundred sixty-one billion, two hundred sixty-six million, two hundred sixteen thousand, five hundred sixty-two".