1387563888125 has 20 divisors (see below), whose sum is σ = 1793689507500. Its totient is φ = 1071773472000.

The previous prime is 1387563888103. The next prime is 1387563888143. The reversal of 1387563888125 is 5218883657831.

It can be written as a sum of positive squares in 10 ways, for example, as 1244603521924 + 142960366201 = 1115618^2 + 378101^2 .

It is not a de Polignac number, because 1387563888125 - 2⁸ = 1387563887869 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 19 ways as a sum of consecutive naturals, for example, 38259500 + ... + 38295749.

It is an arithmetic number, because the mean of its divisors is an integer number (89684475375).

Almost surely, 2^{1387563888125} is an apocalyptic number.

It is an amenable number.

1387563888125 is a deficient number, since it is larger than the sum of its proper divisors (406125619375).

1387563888125 is an frugal number, since it uses more digits than its factorization.

1387563888125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76555298 (or 76555283 counting only the distinct ones).

The product of its digits is 77414400, while the sum is 65.

The spelling of 1387563888125 in words is "one trillion, three hundred eighty-seven billion, five hundred sixty-three million, eight hundred eighty-eight thousand, one hundred twenty-five".