1380987982079 has 2 divisors, whose sum is σ = 1380987982080. Its totient is φ = 1380987982078.

The previous prime is 1380987982021. The next prime is 1380987982097. The reversal of 1380987982079 is 9702897890831.

Together with next prime (1380987982097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1380987982079 - 2²⁰ = 1380986933503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1380987987079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690493991039 + 690493991040.

It is an arithmetic number, because the mean of its divisors is an integer number (690493991040).

Almost surely, 2^{1380987982079} is an apocalyptic number.

1380987982079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380987982079 is an equidigital number, since it uses as much as digits as its factorization.

1380987982079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 109734912, while the sum is 71.

The spelling of 1380987982079 in words is "one trillion, three hundred eighty billion, nine hundred eighty-seven million, nine hundred eighty-two thousand, seventy-nine".