1375138887569 has 2 divisors, whose sum is σ = 1375138887570. Its totient is φ = 1375138887568.

The previous prime is 1375138887527. The next prime is 1375138887653. The reversal of 1375138887569 is 9657888315731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1371388549969 + 3750337600 = 1171063^2 + 61240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1375138887569 is a prime.

It is a super-2 number, since 2×1375138887569² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1375138884569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687569443784 + 687569443785.

It is an arithmetic number, because the mean of its divisors is an integer number (687569443785).

Almost surely, 2^{1375138887569} is an apocalyptic number.

It is an amenable number.

1375138887569 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375138887569 is an equidigital number, since it uses as much as digits as its factorization.

1375138887569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 304819200, while the sum is 71.

The spelling of 1375138887569 in words is "one trillion, three hundred seventy-five billion, one hundred thirty-eight million, eight hundred eighty-seven thousand, five hundred sixty-nine".