526261634561 has 6 divisors (see below), whose sum is σ = 569857273110. Its totient is φ = 485779970208.

The previous prime is 526261634537. The next prime is 526261634603. The reversal of 526261634561 is 165436162625.

It can be written as a sum of positive squares in 3 ways, for example, as 44486824561 + 481774810000 = 210919^2 + 694100^2 .

It is not a de Polignac number, because 526261634561 - 2¹⁴ = 526261618177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (526261634501) 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 5 ways as a sum of consecutive naturals, for example, 1556986916 + ... + 1556987253.

It is an arithmetic number, because the mean of its divisors is an integer number (94976212185).

Almost surely, 2^526261634561 is an apocalyptic number.

It is an amenable number.

526261634561 is a deficient number, since it is larger than the sum of its proper divisors (43595638549).

526261634561 is a wasteful number, since it uses less digits than its factorization.

526261634561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3113974195 (or 3113974182 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 47.

The spelling of 526261634561 in words is "five hundred twenty-six billion, two hundred sixty-one million, six hundred thirty-four thousand, five hundred sixty-one".