261436873283 has 2 divisors, whose sum is σ = 261436873284. Its totient is φ = 261436873282.

The previous prime is 261436873273. The next prime is 261436873339. The reversal of 261436873283 is 382378634162.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 261436873283 - 2⁴ = 261436873267 is a prime.

It is not a weakly prime, because it can be changed into another prime (261436873273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130718436641 + 130718436642.

It is an arithmetic number, because the mean of its divisors is an integer number (130718436642).

Almost surely, 2^261436873283 is an apocalyptic number.

261436873283 is a deficient number, since it is larger than the sum of its proper divisors (1).

261436873283 is an equidigital number, since it uses as much as digits as its factorization.

261436873283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6967296, while the sum is 53.

The spelling of 261436873283 in words is "two hundred sixty-one billion, four hundred thirty-six million, eight hundred seventy-three thousand, two hundred eighty-three".