561884560336951 has 2 divisors, whose sum is σ = 561884560336952. Its totient is φ = 561884560336950.

The previous prime is 561884560336937. The next prime is 561884560336991. The reversal of 561884560336951 is 159633065488165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561884560336951 - 2³⁹ = 561334804523063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561884560336921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280942280168475 + 280942280168476.

It is an arithmetic number, because the mean of its divisors is an integer number (280942280168476).

Almost surely, 2^{561884560336951} is an apocalyptic number.

561884560336951 is a deficient number, since it is larger than the sum of its proper divisors (1).

561884560336951 is an equidigital number, since it uses as much as digits as its factorization.

561884560336951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872000, while the sum is 70.

The spelling of 561884560336951 in words is "five hundred sixty-one trillion, eight hundred eighty-four billion, five hundred sixty million, three hundred thirty-six thousand, nine hundred fifty-one".