1427529988769 has 2 divisors, whose sum is σ = 1427529988770. Its totient is φ = 1427529988768.

The previous prime is 1427529988763. The next prime is 1427529988813. The reversal of 1427529988769 is 9678899257241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1426722747025 + 807241744 = 1194455^2 + 28412^2 .

It is a cyclic number.

It is not a de Polignac number, because 1427529988769 - 2³² = 1423235021473 is a prime.

It is a super-2 number, since 2×1427529988769² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1427529988769.

It is not a weakly prime, because it can be changed into another prime (1427529988763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713764994384 + 713764994385.

It is an arithmetic number, because the mean of its divisors is an integer number (713764994385).

Almost surely, 2^{1427529988769} is an apocalyptic number.

It is an amenable number.

1427529988769 is a deficient number, since it is larger than the sum of its proper divisors (1).

1427529988769 is an equidigital number, since it uses as much as digits as its factorization.

1427529988769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1097349120, while the sum is 77.

The spelling of 1427529988769 in words is "one trillion, four hundred twenty-seven billion, five hundred twenty-nine million, nine hundred eighty-eight thousand, seven hundred sixty-nine".