486861040261 has 2 divisors, whose sum is σ = 486861040262. Its totient is φ = 486861040260.

The previous prime is 486861040243. The next prime is 486861040271. The reversal of 486861040261 is 162040168684.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 481488883236 + 5372157025 = 693894^2 + 73295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-486861040261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (486861040271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243430520130 + 243430520131.

It is an arithmetic number, because the mean of its divisors is an integer number (243430520131).

Almost surely, 2^486861040261 is an apocalyptic number.

It is an amenable number.

486861040261 is a deficient number, since it is larger than the sum of its proper divisors (1).

486861040261 is an equidigital number, since it uses as much as digits as its factorization.

486861040261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 486861040261 in words is "four hundred eighty-six billion, eight hundred sixty-one million, forty thousand, two hundred sixty-one".