7071738705281 has 2 divisors, whose sum is σ = 7071738705282. Its totient is φ = 7071738705280.

The previous prime is 7071738705271. The next prime is 7071738705323. The reversal of 7071738705281 is 1825078371707.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3610684032400 + 3461054672881 = 1900180^2 + 1860391^2 .

It is a cyclic number.

It is not a de Polignac number, because 7071738705281 - 2¹⁴ = 7071738688897 is a prime.

It is a super-2 number, since 2×7071738705281² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7071738705271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3535869352640 + 3535869352641.

It is an arithmetic number, because the mean of its divisors is an integer number (3535869352641).

Almost surely, 2^{7071738705281} is an apocalyptic number.

It is an amenable number.

7071738705281 is a deficient number, since it is larger than the sum of its proper divisors (1).

7071738705281 is an equidigital number, since it uses as much as digits as its factorization.

7071738705281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4609920, while the sum is 56.

The spelling of 7071738705281 in words is "seven trillion, seventy-one billion, seven hundred thirty-eight million, seven hundred five thousand, two hundred eighty-one".