1383651685279 has 2 divisors, whose sum is σ = 1383651685280. Its totient is φ = 1383651685278.

The previous prime is 1383651685277. The next prime is 1383651685301. The reversal of 1383651685279 is 9725861563831.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1383651685279 - 2¹ = 1383651685277 is a prime.

Together with 1383651685277, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1383651685279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1383651685277) 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, 691825842639 + 691825842640.

It is an arithmetic number, because the mean of its divisors is an integer number (691825842640).

Almost surely, 2^{1383651685279} is an apocalyptic number.

1383651685279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1383651685279 is an equidigital number, since it uses as much as digits as its factorization.

1383651685279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65318400, while the sum is 64.

The spelling of 1383651685279 in words is "one trillion, three hundred eighty-three billion, six hundred fifty-one million, six hundred eighty-five thousand, two hundred seventy-nine".