13857432280249 has 16 divisors (see below), whose sum is σ = 14639441415552. Its totient is φ = 13091211479808.

The previous prime is 13857432280199. The next prime is 13857432280481. The reversal of 13857432280249 is 94208223475831.

It is a cyclic number.

It is not a de Polignac number, because 13857432280249 - 2⁹ = 13857432279737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13857432280193 and 13857432280202.

It is not an unprimeable number, because it can be changed into a prime (13857432281249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8684682 + ... + 10155715.

It is an arithmetic number, because the mean of its divisors is an integer number (914965088472).

Almost surely, 2^{13857432280249} is an apocalyptic number.

It is an amenable number.

13857432280249 is a deficient number, since it is larger than the sum of its proper divisors (782009135303).

13857432280249 is a wasteful number, since it uses less digits than its factorization.

13857432280249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18840816.

The product of its (nonzero) digits is 23224320, while the sum is 58.

The spelling of 13857432280249 in words is "thirteen trillion, eight hundred fifty-seven billion, four hundred thirty-two million, two hundred eighty thousand, two hundred forty-nine".