261136466516203 has 2 divisors, whose sum is σ = 261136466516204. Its totient is φ = 261136466516202.

The previous prime is 261136466516197. The next prime is 261136466516279. The reversal of 261136466516203 is 302615664631162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 261136466516203 - 2¹³ = 261136466508011 is a prime.

It is not a weakly prime, because it can be changed into another prime (261136466516293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130568233258101 + 130568233258102.

It is an arithmetic number, because the mean of its divisors is an integer number (130568233258102).

Almost surely, 2^{261136466516203} is an apocalyptic number.

261136466516203 is a deficient number, since it is larger than the sum of its proper divisors (1).

261136466516203 is an equidigital number, since it uses as much as digits as its factorization.

261136466516203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5598720, while the sum is 52.

The spelling of 261136466516203 in words is "two hundred sixty-one trillion, one hundred thirty-six billion, four hundred sixty-six million, five hundred sixteen thousand, two hundred three".