26541652561 has 8 divisors (see below), whose sum is σ = 26724662784. Its totient is φ = 26358982800.

The previous prime is 26541652559. The next prime is 26541652567. The reversal of 26541652561 is 16525614562.

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 26541652561 - 2¹ = 26541652559 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 72336 + ... + 241486.

It is an arithmetic number, because the mean of its divisors is an integer number (3340582848).

Almost surely, 2^26541652561 is an apocalyptic number.

It is an amenable number.

26541652561 is a deficient number, since it is larger than the sum of its proper divisors (183010223).

26541652561 is a wasteful number, since it uses less digits than its factorization.

26541652561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170231.

The product of its digits is 432000, while the sum is 43.

The spelling of 26541652561 in words is "twenty-six billion, five hundred forty-one million, six hundred fifty-two thousand, five hundred sixty-one".