1338125256971 has 4 divisors (see below), whose sum is σ = 1338135973200. Its totient is φ = 1338114540744.

The previous prime is 1338125256943. The next prime is 1338125256997. The reversal of 1338125256971 is 1796525218331.

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

It is a cyclic number.

It is not a de Polignac number, because 1338125256971 - 2¹⁴ = 1338125240587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1338125256371) 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, 5168576 + ... + 5421293.

It is an arithmetic number, because the mean of its divisors is an integer number (334533993300).

Almost surely, 2^{1338125256971} is an apocalyptic number.

1338125256971 is a deficient number, since it is larger than the sum of its proper divisors (10716229).

1338125256971 is a wasteful number, since it uses less digits than its factorization.

1338125256971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10716228.

The product of its digits is 2721600, while the sum is 53.

The spelling of 1338125256971 in words is "one trillion, three hundred thirty-eight billion, one hundred twenty-five million, two hundred fifty-six thousand, nine hundred seventy-one".