1386647877887 has 4 divisors (see below), whose sum is σ = 1446936916080. Its totient is φ = 1326358839696.

The previous prime is 1386647877877. The next prime is 1386647877907. The reversal of 1386647877887 is 7887787466831.

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 1386647877887 - 2⁸ = 1386647877631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386647877817) 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, 30144519062 + ... + 30144519107.

It is an arithmetic number, because the mean of its divisors is an integer number (361734229020).

Almost surely, 2^{1386647877887} is an apocalyptic number.

1386647877887 is a deficient number, since it is larger than the sum of its proper divisors (60289038193).

1386647877887 is an equidigital number, since it uses as much as digits as its factorization.

1386647877887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60289038192.

The product of its digits is 4248502272, while the sum is 80.

The spelling of 1386647877887 in words is "one trillion, three hundred eighty-six billion, six hundred forty-seven million, eight hundred seventy-seven thousand, eight hundred eighty-seven".