1370690685281 has 2 divisors, whose sum is σ = 1370690685282. Its totient is φ = 1370690685280.

The previous prime is 1370690685191. The next prime is 1370690685293. The reversal of 1370690685281 is 1825860960731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1004974170256 + 365716515025 = 1002484^2 + 604745^2 .

It is a cyclic number.

It is not a de Polignac number, because 1370690685281 - 2¹⁰ = 1370690684257 is a prime.

It is a super-2 number, since 2×1370690685281² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1370690685181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685345342640 + 685345342641.

It is an arithmetic number, because the mean of its divisors is an integer number (685345342641).

Almost surely, 2^{1370690685281} is an apocalyptic number.

It is an amenable number.

1370690685281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1370690685281 is an equidigital number, since it uses as much as digits as its factorization.

1370690685281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 56.

Subtracting from 1370690685281 its sum of digits (56), we obtain a square (1370690685225 = 1170765²).

The spelling of 1370690685281 in words is "one trillion, three hundred seventy billion, six hundred ninety million, six hundred eighty-five thousand, two hundred eighty-one".