26352632561 has 4 divisors (see below), whose sum is σ = 26435764212. Its totient is φ = 26269500912.

The previous prime is 26352632557. The next prime is 26352632563. The reversal of 26352632561 is 16523625362.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4642378225 + 21710254336 = 68135^2 + 147344^2 .

It is a cyclic number.

It is not a de Polignac number, because 26352632561 - 2² = 26352632557 is a prime.

It is a super-2 number, since 2×26352632561² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26352632563) 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 3 ways as a sum of consecutive naturals, for example, 41565350 + ... + 41565983.

It is an arithmetic number, because the mean of its divisors is an integer number (6608941053).

Almost surely, 2^26352632561 is an apocalyptic number.

It is an amenable number.

26352632561 is a deficient number, since it is larger than the sum of its proper divisors (83131651).

26352632561 is an equidigital number, since it uses as much as digits as its factorization.

26352632561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83131650.

The product of its digits is 388800, while the sum is 41.

The spelling of 26352632561 in words is "twenty-six billion, three hundred fifty-two million, six hundred thirty-two thousand, five hundred sixty-one".