1387775265139 has 4 divisors (see below), whose sum is σ = 1387883774160. Its totient is φ = 1387666756120.

The previous prime is 1387775265119. The next prime is 1387775265179. The reversal of 1387775265139 is 9315625777831.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1387775265139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1387775265109) 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, 54235324 + ... + 54260905.

It is an arithmetic number, because the mean of its divisors is an integer number (346970943540).

Almost surely, 2^{1387775265139} is an apocalyptic number.

1387775265139 is a deficient number, since it is larger than the sum of its proper divisors (108509021).

1387775265139 is a wasteful number, since it uses less digits than its factorization.

1387775265139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108509020.

The product of its digits is 66679200, while the sum is 64.

The spelling of 1387775265139 in words is "one trillion, three hundred eighty-seven billion, seven hundred seventy-five million, two hundred sixty-five thousand, one hundred thirty-nine".