1375138887613 has 4 divisors (see below), whose sum is σ = 1447514618560. Its totient is φ = 1302763156668.

The previous prime is 1375138887569. The next prime is 1375138887653. The reversal of 1375138887613 is 3167888315731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1375138887613 - 2²⁵ = 1375105333181 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 (1375138887653) 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, 36187865445 + ... + 36187865482.

It is an arithmetic number, because the mean of its divisors is an integer number (361878654640).

Almost surely, 2^{1375138887613} is an apocalyptic number.

It is an amenable number.

1375138887613 is a deficient number, since it is larger than the sum of its proper divisors (72375730947).

1375138887613 is an equidigital number, since it uses as much as digits as its factorization.

1375138887613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72375730946.

The product of its digits is 20321280, while the sum is 61.

The spelling of 1375138887613 in words is "one trillion, three hundred seventy-five billion, one hundred thirty-eight million, eight hundred eighty-seven thousand, six hundred thirteen".