1375538100281 has 8 divisors (see below), whose sum is σ = 1412757651720. Its totient is φ = 1338320803968.

The previous prime is 1375538100259. The next prime is 1375538100289. The reversal of 1375538100281 is 1820018355731.

It can be written as a sum of positive squares in 4 ways, for example, as 218407610281 + 1157130490000 = 467341^2 + 1075700^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1375538100281 is a prime.

It is a super-2 number, since 2×1375538100281² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1375538100289) 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 in 7 ways as a sum of consecutive naturals, for example, 711125 + ... + 1804653.

It is an arithmetic number, because the mean of its divisors is an integer number (176594706465).

Almost surely, 2^{1375538100281} is an apocalyptic number.

It is an amenable number.

1375538100281 is a deficient number, since it is larger than the sum of its proper divisors (37219551439).

1375538100281 is a wasteful number, since it uses less digits than its factorization.

1375538100281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127563.

The product of its (nonzero) digits is 201600, while the sum is 44.

The spelling of 1375538100281 in words is "one trillion, three hundred seventy-five billion, five hundred thirty-eight million, one hundred thousand, two hundred eighty-one".