261842592047 has 2 divisors, whose sum is σ = 261842592048. Its totient is φ = 261842592046.

The previous prime is 261842592023. The next prime is 261842592073. The reversal of 261842592047 is 740295248162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 261842592047 - 2³² = 257547624751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 261842591986 and 261842592004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261842592017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130921296023 + 130921296024.

It is an arithmetic number, because the mean of its divisors is an integer number (130921296024).

Almost surely, 2^261842592047 is an apocalyptic number.

261842592047 is a deficient number, since it is larger than the sum of its proper divisors (1).

261842592047 is an equidigital number, since it uses as much as digits as its factorization.

261842592047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 261842592047 in words is "two hundred sixty-one billion, eight hundred forty-two million, five hundred ninety-two thousand, forty-seven".