13868391992841 has 21 divisors (see below), whose sum is σ = 20793226815901. Its totient is φ = 9245527629372.

The previous prime is 13868391992813. The next prime is 13868391992849. The reversal of 13868391992841 is 14829919386831.

The square root of 13868391992841 is 3724029.

It is a perfect power (a square), and thus also a powerful number.

13868391992841 is a `hidden beast` number, since 1 + 3 + 86 + 83 + 9 + 199 + 284 + 1 = 666.

It is not a de Polignac number, because 13868391992841 - 2³⁷ = 13730953039369 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13868391992841.

It is not an unprimeable number, because it can be changed into a prime (13868391992849) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 100479820 + ... + 100617746.

Almost surely, 2^{13868391992841} is an apocalyptic number.

13868391992841 is the 3724029-th square number.

13868391992841 is the 1862015-th centered octagonal number.

It is an amenable number.

13868391992841 is a deficient number, since it is larger than the sum of its proper divisors (6924834823060).

13868391992841 is an frugal number, since it uses more digits than its factorization.

13868391992841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275872 (or 137930 counting only the distinct ones).

The product of its digits is 161243136, while the sum is 72.

The spelling of 13868391992841 in words is "thirteen trillion, eight hundred sixty-eight billion, three hundred ninety-one million, nine hundred ninety-two thousand, eight hundred forty-one".