1144064066681 has 2 divisors, whose sum is σ = 1144064066682. Its totient is φ = 1144064066680.

The previous prime is 1144064066603. The next prime is 1144064066683. The reversal of 1144064066681 is 1866604604411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 881570766400 + 262493300281 = 938920^2 + 512341^2 .

It is a cyclic number.

It is not a de Polignac number, because 1144064066681 - 2²² = 1144059872377 is a prime.

It is a super-2 number, since 2×1144064066681² (a number of 25 digits) contains 22 as substring.

Together with 1144064066683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1144064066683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572032033340 + 572032033341.

It is an arithmetic number, because the mean of its divisors is an integer number (572032033341).

Almost surely, 2^{1144064066681} is an apocalyptic number.

It is an amenable number.

1144064066681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144064066681 is an equidigital number, since it uses as much as digits as its factorization.

1144064066681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 663552, while the sum is 47.

The spelling of 1144064066681 in words is "one trillion, one hundred forty-four billion, sixty-four million, sixty-six thousand, six hundred eighty-one".