1331271452461 has 2 divisors, whose sum is σ = 1331271452462. Its totient is φ = 1331271452460.

The previous prime is 1331271452419. The next prime is 1331271452491. The reversal of 1331271452461 is 1642541721331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1331240594436 + 30858025 = 1153794^2 + 5555^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331271452461 - 2¹⁵ = 1331271419693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331271452491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665635726230 + 665635726231.

It is an arithmetic number, because the mean of its divisors is an integer number (665635726231).

Almost surely, 2^{1331271452461} is an apocalyptic number.

It is an amenable number.

1331271452461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331271452461 is an equidigital number, since it uses as much as digits as its factorization.

1331271452461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The spelling of 1331271452461 in words is "one trillion, three hundred thirty-one billion, two hundred seventy-one million, four hundred fifty-two thousand, four hundred sixty-one".