131861465932447 has 2 divisors, whose sum is σ = 131861465932448. Its totient is φ = 131861465932446.

The previous prime is 131861465932309. The next prime is 131861465932499. The reversal of 131861465932447 is 744239564168131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131861465932447 - 2¹¹ = 131861465930399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131861465912447) 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, 65930732966223 + 65930732966224.

It is an arithmetic number, because the mean of its divisors is an integer number (65930732966224).

Almost surely, 2^{131861465932447} is an apocalyptic number.

131861465932447 is a deficient number, since it is larger than the sum of its proper divisors (1).

131861465932447 is an equidigital number, since it uses as much as digits as its factorization.

131861465932447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104509440, while the sum is 64.

The spelling of 131861465932447 in words is "one hundred thirty-one trillion, eight hundred sixty-one billion, four hundred sixty-five million, nine hundred thirty-two thousand, four hundred forty-seven".