1387873377899 has 4 divisors (see below), whose sum is σ = 1388950084680. Its totient is φ = 1386796671120.

The previous prime is 1387873377889. The next prime is 1387873377901. The reversal of 1387873377899 is 9987733787831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1387873377899 - 2²⁰ = 1387872329323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1387873377829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538351457 + ... + 538354034.

It is an arithmetic number, because the mean of its divisors is an integer number (347237521170).

Almost surely, 2^{1387873377899} is an apocalyptic number.

1387873377899 is a deficient number, since it is larger than the sum of its proper divisors (1076706781).

1387873377899 is a wasteful number, since it uses less digits than its factorization.

1387873377899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076706780.

The product of its digits is 2688505344, while the sum is 80.

The spelling of 1387873377899 in words is "one trillion, three hundred eighty-seven billion, eight hundred seventy-three million, three hundred seventy-seven thousand, eight hundred ninety-nine".