1352013845681 has 2 divisors, whose sum is σ = 1352013845682. Its totient is φ = 1352013845680.

The previous prime is 1352013845671. The next prime is 1352013845687. The reversal of 1352013845681 is 1865483102531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1241397072400 + 110616773281 = 1114180^2 + 332591^2 .

It is a cyclic number.

It is not a de Polignac number, because 1352013845681 - 2¹⁴ = 1352013829297 is a prime.

It is a super-2 number, since 2×1352013845681² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1352013845687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 676006922840 + 676006922841.

It is an arithmetic number, because the mean of its divisors is an integer number (676006922841).

Almost surely, 2^{1352013845681} is an apocalyptic number.

It is an amenable number.

1352013845681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1352013845681 is an equidigital number, since it uses as much as digits as its factorization.

1352013845681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 691200, while the sum is 47.

The spelling of 1352013845681 in words is "one trillion, three hundred fifty-two billion, thirteen million, eight hundred forty-five thousand, six hundred eighty-one".