26541652565 has 16 divisors (see below), whose sum is σ = 31936161600. Its totient is φ = 21175944192.

The previous prime is 26541652559. The next prime is 26541652567. The reversal of 26541652565 is 56525614562.

It is a cyclic number.

It is not a de Polignac number, because 26541652565 - 2⁴ = 26541652549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26541652567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3540341 + ... + 3547829.

It is an arithmetic number, because the mean of its divisors is an integer number (1996010100).

Almost surely, 2^26541652565 is an apocalyptic number.

It is an amenable number.

26541652565 is a deficient number, since it is larger than the sum of its proper divisors (5394509035).

26541652565 is a wasteful number, since it uses less digits than its factorization.

26541652565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9316.

The product of its digits is 2160000, while the sum is 47.

The spelling of 26541652565 in words is "twenty-six billion, five hundred forty-one million, six hundred fifty-two thousand, five hundred sixty-five".