26536463561 has 8 divisors (see below), whose sum is σ = 26611394400. Its totient is φ = 26461582560.

The previous prime is 26536463557. The next prime is 26536463567. The reversal of 26536463561 is 16536463562.

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

It is a cyclic number.

It is not a de Polignac number, because 26536463561 - 2² = 26536463557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26536463567) 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, 1224026 + ... + 1245516.

It is an arithmetic number, because the mean of its divisors is an integer number (3326424300).

Almost surely, 2^26536463561 is an apocalyptic number.

It is an amenable number.

26536463561 is a deficient number, since it is larger than the sum of its proper divisors (74930839).

26536463561 is a wasteful number, since it uses less digits than its factorization.

26536463561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24919.

The product of its digits is 2332800, while the sum is 47.

Subtracting from 26536463561 its reverse (16536463562), we obtain a palindrome (9999999999).

The spelling of 26536463561 in words is "twenty-six billion, five hundred thirty-six million, four hundred sixty-three thousand, five hundred sixty-one".