261467358833 has 2 divisors, whose sum is σ = 261467358834. Its totient is φ = 261467358832.

The previous prime is 261467358787. The next prime is 261467358839. The reversal of 261467358833 is 338853764162.

261467358833 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136287965584 + 125179393249 = 369172^2 + 353807^2 .

It is a cyclic number.

It is not a de Polignac number, because 261467358833 - 2²⁰ = 261466310257 is a prime.

It is not a weakly prime, because it can be changed into another prime (261467358839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130733679416 + 130733679417.

It is an arithmetic number, because the mean of its divisors is an integer number (130733679417).

Almost surely, 2^261467358833 is an apocalyptic number.

It is an amenable number.

261467358833 is a deficient number, since it is larger than the sum of its proper divisors (1).

261467358833 is an equidigital number, since it uses as much as digits as its factorization.

261467358833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17418240, while the sum is 56.

The spelling of 261467358833 in words is "two hundred sixty-one billion, four hundred sixty-seven million, three hundred fifty-eight thousand, eight hundred thirty-three".