13872042447 has 8 divisors (see below), whose sum is σ = 18583716480. Its totient is φ = 9204198360.

The previous prime is 13872042427. The next prime is 13872042461. The reversal of 13872042447 is 74424027831.

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

It is not a de Polignac number, because 13872042447 - 2¹⁰ = 13872041423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13872042399 and 13872042408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13872042407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10956747 + ... + 10958012.

It is an arithmetic number, because the mean of its divisors is an integer number (2322964560).

Almost surely, 2^13872042447 is an apocalyptic number.

13872042447 is a deficient number, since it is larger than the sum of its proper divisors (4711674033).

13872042447 is a wasteful number, since it uses less digits than its factorization.

13872042447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21914973.

The product of its (nonzero) digits is 301056, while the sum is 42.

The spelling of 13872042447 in words is "thirteen billion, eight hundred seventy-two million, forty-two thousand, four hundred forty-seven".