261929855437483 has 2 divisors, whose sum is σ = 261929855437484. Its totient is φ = 261929855437482.

The previous prime is 261929855437427. The next prime is 261929855437507. The reversal of 261929855437483 is 384734558929162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 261929855437483 - 2¹⁷ = 261929855306411 is a prime.

It is not a weakly prime, because it can be changed into another prime (261929855437403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130964927718741 + 130964927718742.

It is an arithmetic number, because the mean of its divisors is an integer number (130964927718742).

Almost surely, 2^{261929855437483} is an apocalyptic number.

261929855437483 is a deficient number, since it is larger than the sum of its proper divisors (1).

261929855437483 is an equidigital number, since it uses as much as digits as its factorization.

261929855437483 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3135283200, while the sum is 76.

The spelling of 261929855437483 in words is "two hundred sixty-one trillion, nine hundred twenty-nine billion, eight hundred fifty-five million, four hundred thirty-seven thousand, four hundred eighty-three".