1375138887652 has 6 divisors (see below), whose sum is σ = 2406493053398. Its totient is φ = 687569443824.

The previous prime is 1375138887569. The next prime is 1375138887653. The reversal of 1375138887652 is 2567888315731.

It can be written as a sum of positive squares in only one way, i.e., 1375098641316 + 40246336 = 1172646^2 + 6344^2 .

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 as a sum of consecutive naturals, namely, 171892360953 + ... + 171892360960.

Almost surely, 2^{1375138887652} is an apocalyptic number.

It is an amenable number.

1375138887652 is a deficient number, since it is larger than the sum of its proper divisors (1031354165746).

1375138887652 is a wasteful number, since it uses less digits than its factorization.

1375138887652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343784721917 (or 343784721915 counting only the distinct ones).

The product of its digits is 67737600, while the sum is 64.

The spelling of 1375138887652 in words is "one trillion, three hundred seventy-five billion, one hundred thirty-eight million, eight hundred eighty-seven thousand, six hundred fifty-two".