261440114565533 has 2 divisors, whose sum is σ = 261440114565534. Its totient is φ = 261440114565532.

The previous prime is 261440114565523. The next prime is 261440114565563. The reversal of 261440114565533 is 335565411044162.

261440114565533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228235287221764 + 33204827343769 = 15107458^2 + 5762363^2 .

It is a cyclic number.

It is not a de Polignac number, because 261440114565533 - 2⁴ = 261440114565517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261440114565523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130720057282766 + 130720057282767.

It is an arithmetic number, because the mean of its divisors is an integer number (130720057282767).

Almost surely, 2^{261440114565533} is an apocalyptic number.

It is an amenable number.

261440114565533 is a deficient number, since it is larger than the sum of its proper divisors (1).

261440114565533 is an equidigital number, since it uses as much as digits as its factorization.

261440114565533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184000, while the sum is 50.

The spelling of 261440114565533 in words is "two hundred sixty-one trillion, four hundred forty billion, one hundred fourteen million, five hundred sixty-five thousand, five hundred thirty-three".