561535663230026 has 16 divisors (see below), whose sum is σ = 886645863489600. Its totient is φ = 265987395592128.

The previous prime is 561535663230023. The next prime is 561535663230029. The reversal of 561535663230026 is 620032366535165.

It is an interprime number because it is at equal distance from previous prime (561535663230023) and next prime (561535663230029).

It is a self number, because there is not a number n which added to its sum of digits gives 561535663230026.

It is not an unprimeable number, because it can be changed into a prime (561535663230023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85161215 + ... + 91517778.

It is an arithmetic number, because the mean of its divisors is an integer number (55415366468100).

Almost surely, 2^{561535663230026} is an apocalyptic number.

561535663230026 is a deficient number, since it is larger than the sum of its proper divisors (325110200259574).

561535663230026 is a wasteful number, since it uses less digits than its factorization.

561535663230026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176762653.

The product of its (nonzero) digits is 17496000, while the sum is 53.

The spelling of 561535663230026 in words is "five hundred sixty-one trillion, five hundred thirty-five billion, six hundred sixty-three million, two hundred thirty thousand, twenty-six".