1387436378579 has 2 divisors, whose sum is σ = 1387436378580. Its totient is φ = 1387436378578.

The previous prime is 1387436378569. The next prime is 1387436378623. The reversal of 1387436378579 is 9758736347831.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1387436378579 is a prime.

It is not a weakly prime, because it can be changed into another prime (1387436378539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693718189289 + 693718189290.

It is an arithmetic number, because the mean of its divisors is an integer number (693718189290).

Almost surely, 2^{1387436378579} is an apocalyptic number.

1387436378579 is a deficient number, since it is larger than the sum of its proper divisors (1).

1387436378579 is an equidigital number, since it uses as much as digits as its factorization.

1387436378579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 640120320, while the sum is 71.

The spelling of 1387436378579 in words is "one trillion, three hundred eighty-seven billion, four hundred thirty-six million, three hundred seventy-eight thousand, five hundred seventy-nine".