1369947641281 has 2 divisors, whose sum is σ = 1369947641282. Its totient is φ = 1369947641280.

The previous prime is 1369947641243. The next prime is 1369947641287. The reversal of 1369947641281 is 1821467499631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 763947669681 + 605999971600 = 874041^2 + 778460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1369947641281 is a prime.

It is a super-2 number, since 2×1369947641281² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1369947641287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684973820640 + 684973820641.

It is an arithmetic number, because the mean of its divisors is an integer number (684973820641).

Almost surely, 2^{1369947641281} is an apocalyptic number.

It is an amenable number.

1369947641281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1369947641281 is an equidigital number, since it uses as much as digits as its factorization.

1369947641281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15676416, while the sum is 61.

The spelling of 1369947641281 in words is "one trillion, three hundred sixty-nine billion, nine hundred forty-seven million, six hundred forty-one thousand, two hundred eighty-one".