1351696761809 has 2 divisors, whose sum is σ = 1351696761810. Its totient is φ = 1351696761808.

The previous prime is 1351696761787. The next prime is 1351696761817. The reversal of 1351696761809 is 9081676961531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 742134006784 + 609562755025 = 861472^2 + 780745^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351696761809 - 2²⁰ = 1351695713233 is a prime.

It is not a weakly prime, because it can be changed into another prime (1351696761889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675848380904 + 675848380905.

It is an arithmetic number, because the mean of its divisors is an integer number (675848380905).

Almost surely, 2^{1351696761809} is an apocalyptic number.

It is an amenable number.

1351696761809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351696761809 is an equidigital number, since it uses as much as digits as its factorization.

1351696761809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14696640, while the sum is 62.

The spelling of 1351696761809 in words is "one trillion, three hundred fifty-one billion, six hundred ninety-six million, seven hundred sixty-one thousand, eight hundred nine".